Home / 80,853,613.70-121,285,669.35-42,589,861.70

Finding the Fourth Proportional to 80,853,613.70, 121,285,669.35 and 42,589,861.70

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Solution

The fourth proportional to 80,853,613.70, 121,285,669.35 and 42,589,861.70 is: 63,887,557.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,853,613.70 : 121,285,669.35 = 42,589,861.70 : x
  2. Step 2: Convert to fraction form
    80,853,613.70/121,285,669.35 = 42,589,861.70/x
  3. Step 3: Cross multiply
    80,853,613.70x = 121,285,669.35 × 42,589,861.70
  4. Step 4: Simplify right side
    80,853,613.70x = 5,165,539,883,808,429
  5. Step 5: Solve for x
    x = 5,165,539,883,808,429/80,853,613.70
  6. Step 6: Final answer
    x = 63,887,557.37

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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.