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Finding the Fourth Proportional to 78,001.38, 117,000.45 and 49,934.88

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Solution

The fourth proportional to 78,001.38, 117,000.45 and 49,934.88 is: 74,901.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,001.38 : 117,000.45 = 49,934.88 : x
  2. Step 2: Convert to fraction form
    78,001.38/117,000.45 = 49,934.88/x
  3. Step 3: Cross multiply
    78,001.38x = 117,000.45 × 49,934.88
  4. Step 4: Simplify right side
    78,001.38x = 5,842,403,430.70
  5. Step 5: Solve for x
    x = 5,842,403,430.70/78,001.38
  6. Step 6: Final answer
    x = 74,901.28

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1.5x scale

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.