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Finding the Fourth Proportional to 94,691.88, 142,038.92 and 28,130.40

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Solution

The fourth proportional to 94,691.88, 142,038.92 and 28,130.40 is: 42,195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,691.88 : 142,038.92 = 28,130.40 : x
  2. Step 2: Convert to fraction form
    94,691.88/142,038.92 = 28,130.40/x
  3. Step 3: Cross multiply
    94,691.88x = 142,038.92 × 28,130.40
  4. Step 4: Simplify right side
    94,691.88x = 3,995,611,635.17
  5. Step 5: Solve for x
    x = 3,995,611,635.17/94,691.88
  6. Step 6: Final answer
    x = 42,195.93

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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.