Home / 91,996.50-138,038.32-38,700.16

Finding the Fourth Proportional to 91,996.50, 138,038.32 and 38,700.16

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Solution

The fourth proportional to 91,996.50, 138,038.32 and 38,700.16 is: 58,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,996.50 : 138,038.32 = 38,700.16 : x
  2. Step 2: Convert to fraction form
    91,996.50/138,038.32 = 38,700.16/x
  3. Step 3: Cross multiply
    91,996.50x = 138,038.32 × 38,700.16
  4. Step 4: Simplify right side
    91,996.50x = 5,342,105,070.13
  5. Step 5: Solve for x
    x = 5,342,105,070.13/91,996.50
  6. Step 6: Final answer
    x = 58,068.57

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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.