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Finding the Fourth Proportional to 78,602.01, 108,442.64 and 52,766.86

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Solution

The fourth proportional to 78,602.01, 108,442.64 and 52,766.86 is: 72,799.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,602.01 : 108,442.64 = 52,766.86 : x
  2. Step 2: Convert to fraction form
    78,602.01/108,442.64 = 52,766.86/x
  3. Step 3: Cross multiply
    78,602.01x = 108,442.64 × 52,766.86
  4. Step 4: Simplify right side
    78,602.01x = 5,722,177,463.72
  5. Step 5: Solve for x
    x = 5,722,177,463.72/78,602.01
  6. Step 6: Final answer
    x = 72,799.38

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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.