Home / 87,627,039.20-120,885,082.80-56,697,290.72

Finding the Fourth Proportional to 87,627,039.20, 120,885,082.80 and 56,697,290.72

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Solution

The fourth proportional to 87,627,039.20, 120,885,082.80 and 56,697,290.72 is: 78,216,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,627,039.20 : 120,885,082.80 = 56,697,290.72 : x
  2. Step 2: Convert to fraction form
    87,627,039.20/120,885,082.80 = 56,697,290.72/x
  3. Step 3: Cross multiply
    87,627,039.20x = 120,885,082.80 × 56,697,290.72
  4. Step 4: Simplify right side
    87,627,039.20x = 6,853,856,683,222,871
  5. Step 5: Solve for x
    x = 6,853,856,683,222,871/87,627,039.20
  6. Step 6: Final answer
    x = 78,216,230.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.