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Finding the Fourth Proportional to 82,944,447.80, 124,416,671.70 and 76,897,830.20

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Solution

The fourth proportional to 82,944,447.80, 124,416,671.70 and 76,897,830.20 is: 115,346,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,944,447.80 : 124,416,671.70 = 76,897,830.20 : x
  2. Step 2: Convert to fraction form
    82,944,447.80/124,416,671.70 = 76,897,830.20/x
  3. Step 3: Cross multiply
    82,944,447.80x = 124,416,671.70 × 76,897,830.20
  4. Step 4: Simplify right side
    82,944,447.80x = 9,567,372,094,435,746
  5. Step 5: Solve for x
    x = 9,567,372,094,435,746/82,944,447.80
  6. Step 6: Final answer
    x = 115,346,745.30

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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.