Home / 85,724.70-128,607.58-35,777.02

Finding the Fourth Proportional to 85,724.70, 128,607.58 and 35,777.02

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Solution

The fourth proportional to 85,724.70, 128,607.58 and 35,777.02 is: 53,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.70 : 128,607.58 = 35,777.02 : x
  2. Step 2: Convert to fraction form
    85,724.70/128,607.58 = 35,777.02/x
  3. Step 3: Cross multiply
    85,724.70x = 128,607.58 × 35,777.02
  4. Step 4: Simplify right side
    85,724.70x = 4,601,195,961.81
  5. Step 5: Solve for x
    x = 4,601,195,961.81/85,724.70
  6. Step 6: Final answer
    x = 53,674.10

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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.