Home / 80,879,251.40-121,318,877.10-66,518,534.60

Finding the Fourth Proportional to 80,879,251.40, 121,318,877.10 and 66,518,534.60

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Solution

The fourth proportional to 80,879,251.40, 121,318,877.10 and 66,518,534.60 is: 99,777,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879,251.40 : 121,318,877.10 = 66,518,534.60 : x
  2. Step 2: Convert to fraction form
    80,879,251.40/121,318,877.10 = 66,518,534.60/x
  3. Step 3: Cross multiply
    80,879,251.40x = 121,318,877.10 × 66,518,534.60
  4. Step 4: Simplify right side
    80,879,251.40x = 8,069,953,924,009,497
  5. Step 5: Solve for x
    x = 8,069,953,924,009,497/80,879,251.40
  6. Step 6: Final answer
    x = 99,777,801.90

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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.