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Finding the Fourth Proportional to 82,944,326.40, 124,416,489.60 and 42,558,892.80

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Solution

The fourth proportional to 82,944,326.40, 124,416,489.60 and 42,558,892.80 is: 63,838,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,944,326.40 : 124,416,489.60 = 42,558,892.80 : x
  2. Step 2: Convert to fraction form
    82,944,326.40/124,416,489.60 = 42,558,892.80/x
  3. Step 3: Cross multiply
    82,944,326.40x = 124,416,489.60 × 42,558,892.80
  4. Step 4: Simplify right side
    82,944,326.40x = 5,295,028,043,438,714
  5. Step 5: Solve for x
    x = 5,295,028,043,438,714/82,944,326.40
  6. Step 6: Final answer
    x = 63,838,339.20

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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.