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Finding the Fourth Proportional to 72,425.10, 108,637.65 and 54,929.10

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Solution

The fourth proportional to 72,425.10, 108,637.65 and 54,929.10 is: 82,393.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,425.10 : 108,637.65 = 54,929.10 : x
  2. Step 2: Convert to fraction form
    72,425.10/108,637.65 = 54,929.10/x
  3. Step 3: Cross multiply
    72,425.10x = 108,637.65 × 54,929.10
  4. Step 4: Simplify right side
    72,425.10x = 5,967,368,340.62
  5. Step 5: Solve for x
    x = 5,967,368,340.62/72,425.10
  6. Step 6: Final answer
    x = 82,393.65

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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.