Home / 85,976.74-128,945.80-36,113.14

Finding the Fourth Proportional to 85,976.74, 128,945.80 and 36,113.14

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Solution

The fourth proportional to 85,976.74, 128,945.80 and 36,113.14 is: 54,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,976.74 : 128,945.80 = 36,113.14 : x
  2. Step 2: Convert to fraction form
    85,976.74/128,945.80 = 36,113.14/x
  3. Step 3: Cross multiply
    85,976.74x = 128,945.80 × 36,113.14
  4. Step 4: Simplify right side
    85,976.74x = 4,656,637,727.81
  5. Step 5: Solve for x
    x = 4,656,637,727.81/85,976.74
  6. Step 6: Final answer
    x = 54,161.60

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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.