Home / 91,120.28-136,731.46-38,569.10

Finding the Fourth Proportional to 91,120.28, 136,731.46 and 38,569.10

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Solution

The fourth proportional to 91,120.28, 136,731.46 and 38,569.10 is: 57,875.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,120.28 : 136,731.46 = 38,569.10 : x
  2. Step 2: Convert to fraction form
    91,120.28/136,731.46 = 38,569.10/x
  3. Step 3: Cross multiply
    91,120.28x = 136,731.46 × 38,569.10
  4. Step 4: Simplify right side
    91,120.28x = 5,273,609,353.89
  5. Step 5: Solve for x
    x = 5,273,609,353.89/91,120.28
  6. Step 6: Final answer
    x = 57,875.25

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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.