Home / 76,734,177.60-115,101,266.40-66,432,532.80

Finding the Fourth Proportional to 76,734,177.60, 115,101,266.40 and 66,432,532.80

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Solution

The fourth proportional to 76,734,177.60, 115,101,266.40 and 66,432,532.80 is: 99,648,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,734,177.60 : 115,101,266.40 = 66,432,532.80 : x
  2. Step 2: Convert to fraction form
    76,734,177.60/115,101,266.40 = 66,432,532.80/x
  3. Step 3: Cross multiply
    76,734,177.60x = 115,101,266.40 × 66,432,532.80
  4. Step 4: Simplify right side
    76,734,177.60x = 7,646,468,655,439,538
  5. Step 5: Solve for x
    x = 7,646,468,655,439,538/76,734,177.60
  6. Step 6: Final answer
    x = 99,648,799.20

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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.