Home / 85,691.04-128,553.92-30,325.92

Finding the Fourth Proportional to 85,691.04, 128,553.92 and 30,325.92

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Solution

The fourth proportional to 85,691.04, 128,553.92 and 30,325.92 is: 45,495.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.04 : 128,553.92 = 30,325.92 : x
  2. Step 2: Convert to fraction form
    85,691.04/128,553.92 = 30,325.92/x
  3. Step 3: Cross multiply
    85,691.04x = 128,553.92 × 30,325.92
  4. Step 4: Simplify right side
    85,691.04x = 3,898,515,893.61
  5. Step 5: Solve for x
    x = 3,898,515,893.61/85,691.04
  6. Step 6: Final answer
    x = 45,495.02

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1.5x scale

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.