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Finding the Fourth Proportional to 78,007.59, 117,023.54 and 25,404.84

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Solution

The fourth proportional to 78,007.59, 117,023.54 and 25,404.84 is: 38,111.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,007.59 : 117,023.54 = 25,404.84 : x
  2. Step 2: Convert to fraction form
    78,007.59/117,023.54 = 25,404.84/x
  3. Step 3: Cross multiply
    78,007.59x = 117,023.54 × 25,404.84
  4. Step 4: Simplify right side
    78,007.59x = 2,972,964,182.91
  5. Step 5: Solve for x
    x = 2,972,964,182.91/78,007.59
  6. Step 6: Final answer
    x = 38,111.22

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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.