Home / 72,129,808.60-108,194,712.90-28,976,799.40

Finding the Fourth Proportional to 72,129,808.60, 108,194,712.90 and 28,976,799.40

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Solution

The fourth proportional to 72,129,808.60, 108,194,712.90 and 28,976,799.40 is: 43,465,199.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,129,808.60 : 108,194,712.90 = 28,976,799.40 : x
  2. Step 2: Convert to fraction form
    72,129,808.60/108,194,712.90 = 28,976,799.40/x
  3. Step 3: Cross multiply
    72,129,808.60x = 108,194,712.90 × 28,976,799.40
  4. Step 4: Simplify right side
    72,129,808.60x = 3,135,136,491,843,892.50
  5. Step 5: Solve for x
    x = 3,135,136,491,843,892.50/72,129,808.60
  6. Step 6: Final answer
    x = 43,465,199.10

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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.