Home / 78,442.84-108,251.07-42,632.86

Finding the Fourth Proportional to 78,442.84, 108,251.07 and 42,632.86

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Solution

The fourth proportional to 78,442.84, 108,251.07 and 42,632.86 is: 58,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,442.84 : 108,251.07 = 42,632.86 : x
  2. Step 2: Convert to fraction form
    78,442.84/108,251.07 = 42,632.86/x
  3. Step 3: Cross multiply
    78,442.84x = 108,251.07 × 42,632.86
  4. Step 4: Simplify right side
    78,442.84x = 4,615,052,712.16
  5. Step 5: Solve for x
    x = 4,615,052,712.16/78,442.84
  6. Step 6: Final answer
    x = 58,833.32

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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.