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Finding the Fourth Proportional to 82,944,086.60, 124,416,129.90 and 42,129,417.80

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Solution

The fourth proportional to 82,944,086.60, 124,416,129.90 and 42,129,417.80 is: 63,194,126.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,944,086.60 : 124,416,129.90 = 42,129,417.80 : x
  2. Step 2: Convert to fraction form
    82,944,086.60/124,416,129.90 = 42,129,417.80/x
  3. Step 3: Cross multiply
    82,944,086.60x = 124,416,129.90 × 42,129,417.80
  4. Step 4: Simplify right side
    82,944,086.60x = 5,241,579,117,616,172
  5. Step 5: Solve for x
    x = 5,241,579,117,616,172/82,944,086.60
  6. Step 6: Final answer
    x = 63,194,126.70

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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.