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Finding the Fourth Proportional to 52,488,662.20, 78,709,373.70 and 20,129,810.20

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Solution

The fourth proportional to 52,488,662.20, 78,709,373.70 and 20,129,810.20 is: 30,185,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,488,662.20 : 78,709,373.70 = 20,129,810.20 : x
  2. Step 2: Convert to fraction form
    52,488,662.20/78,709,373.70 = 20,129,810.20/x
  3. Step 3: Cross multiply
    52,488,662.20x = 78,709,373.70 × 20,129,810.20
  4. Step 4: Simplify right side
    52,488,662.20x = 1,584,404,753,541,871.75
  5. Step 5: Solve for x
    x = 1,584,404,753,541,871.75/52,488,662.20
  6. Step 6: Final answer
    x = 30,185,657.00

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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.