Home / 91,915.40-137,874.06-39,292.04

Finding the Fourth Proportional to 91,915.40, 137,874.06 and 39,292.04

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Solution

The fourth proportional to 91,915.40, 137,874.06 and 39,292.04 is: 58,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,915.40 : 137,874.06 = 39,292.04 : x
  2. Step 2: Convert to fraction form
    91,915.40/137,874.06 = 39,292.04/x
  3. Step 3: Cross multiply
    91,915.40x = 137,874.06 × 39,292.04
  4. Step 4: Simplify right side
    91,915.40x = 5,417,353,080.48
  5. Step 5: Solve for x
    x = 5,417,353,080.48/91,915.40
  6. Step 6: Final answer
    x = 58,938.47

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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.