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Finding the Fourth Proportional to 73,612.80, 110,534.40 and 42,508.80

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Solution

The fourth proportional to 73,612.80, 110,534.40 and 42,508.80 is: 63,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,612.80 : 110,534.40 = 42,508.80 : x
  2. Step 2: Convert to fraction form
    73,612.80/110,534.40 = 42,508.80/x
  3. Step 3: Cross multiply
    73,612.80x = 110,534.40 × 42,508.80
  4. Step 4: Simplify right side
    73,612.80x = 4,698,684,702.72
  5. Step 5: Solve for x
    x = 4,698,684,702.72/73,612.80
  6. Step 6: Final answer
    x = 63,829.72

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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.