Home / 85,536,633.70-128,053,008.15-80,553,772.90

Finding the Fourth Proportional to 85,536,633.70, 128,053,008.15 and 80,553,772.90

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Solution

The fourth proportional to 85,536,633.70, 128,053,008.15 and 80,553,772.90 is: 120,593,393.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,633.70 : 128,053,008.15 = 80,553,772.90 : x
  2. Step 2: Convert to fraction form
    85,536,633.70/128,053,008.15 = 80,553,772.90/x
  3. Step 3: Cross multiply
    85,536,633.70x = 128,053,008.15 × 80,553,772.90
  4. Step 4: Simplify right side
    85,536,633.70x = 10,315,152,937,676,950
  5. Step 5: Solve for x
    x = 10,315,152,937,676,950/85,536,633.70
  6. Step 6: Final answer
    x = 120,593,393.63

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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.