Home / 20,785,254,178.70-31,177,881,268.05-20,372,005,657.10

Finding the Fourth Proportional to 20,785,254,178.70, 31,177,881,268.05 and 20,372,005,657.10

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Solution

The fourth proportional to 20,785,254,178.70, 31,177,881,268.05 and 20,372,005,657.10 is: 30,558,008,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,254,178.70 : 31,177,881,268.05 = 20,372,005,657.10 : x
  2. Step 2: Convert to fraction form
    20,785,254,178.70/31,177,881,268.05 = 20,372,005,657.10/x
  3. Step 3: Cross multiply
    20,785,254,178.70x = 31,177,881,268.05 × 20,372,005,657.10
  4. Step 4: Simplify right side
    20,785,254,178.70x = 635,155,973,569,106,673,664
  5. Step 5: Solve for x
    x = 635,155,973,569,106,673,664/20,785,254,178.70
  6. Step 6: Final answer
    x = 30,558,008,485.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.