Home / 78,442.29-108,251.07-42,632.39

Finding the Fourth Proportional to 78,442.29, 108,251.07 and 42,632.39

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Solution

The fourth proportional to 78,442.29, 108,251.07 and 42,632.39 is: 58,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,442.29 : 108,251.07 = 42,632.39 : x
  2. Step 2: Convert to fraction form
    78,442.29/108,251.07 = 42,632.39/x
  3. Step 3: Cross multiply
    78,442.29x = 108,251.07 × 42,632.39
  4. Step 4: Simplify right side
    78,442.29x = 4,615,001,292.90
  5. Step 5: Solve for x
    x = 4,615,001,292.90/78,442.29
  6. Step 6: Final answer
    x = 58,833.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.