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Finding the Fourth Proportional to 52,113,693.60, 78,156,543.60 and 21,815,287.20

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Solution

The fourth proportional to 52,113,693.60, 78,156,543.60 and 21,815,287.20 is: 32,717,071.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,113,693.60 : 78,156,543.60 = 21,815,287.20 : x
  2. Step 2: Convert to fraction form
    52,113,693.60/78,156,543.60 = 21,815,287.20/x
  3. Step 3: Cross multiply
    52,113,693.60x = 78,156,543.60 × 21,815,287.20
  4. Step 4: Simplify right side
    52,113,693.60x = 1,705,007,445,193,321.75
  5. Step 5: Solve for x
    x = 1,705,007,445,193,321.75/52,113,693.60
  6. Step 6: Final answer
    x = 32,717,071.61

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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.