Home / 82,438,961.60-123,658,442.40-21,860,811.20

Finding the Fourth Proportional to 82,438,961.60, 123,658,442.40 and 21,860,811.20

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Solution

The fourth proportional to 82,438,961.60, 123,658,442.40 and 21,860,811.20 is: 32,791,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,438,961.60 : 123,658,442.40 = 21,860,811.20 : x
  2. Step 2: Convert to fraction form
    82,438,961.60/123,658,442.40 = 21,860,811.20/x
  3. Step 3: Cross multiply
    82,438,961.60x = 123,658,442.40 × 21,860,811.20
  4. Step 4: Simplify right side
    82,438,961.60x = 2,703,273,862,592,475
  5. Step 5: Solve for x
    x = 2,703,273,862,592,475/82,438,961.60
  6. Step 6: Final answer
    x = 32,791,216.80

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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.