Home / 78,262.11-108,000.90-42,451.36

Finding the Fourth Proportional to 78,262.11, 108,000.90 and 42,451.36

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Solution

The fourth proportional to 78,262.11, 108,000.90 and 42,451.36 is: 58,582.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,262.11 : 108,000.90 = 42,451.36 : x
  2. Step 2: Convert to fraction form
    78,262.11/108,000.90 = 42,451.36/x
  3. Step 3: Cross multiply
    78,262.11x = 108,000.90 × 42,451.36
  4. Step 4: Simplify right side
    78,262.11x = 4,584,784,816.22
  5. Step 5: Solve for x
    x = 4,584,784,816.22/78,262.11
  6. Step 6: Final answer
    x = 58,582.43

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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.