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Finding the Fourth Proportional to 85,115.80, 127,746.60 and 37,803.70

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Solution

The fourth proportional to 85,115.80, 127,746.60 and 37,803.70 is: 56,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.80 : 127,746.60 = 37,803.70 : x
  2. Step 2: Convert to fraction form
    85,115.80/127,746.60 = 37,803.70/x
  3. Step 3: Cross multiply
    85,115.80x = 127,746.60 × 37,803.70
  4. Step 4: Simplify right side
    85,115.80x = 4,829,294,142.42
  5. Step 5: Solve for x
    x = 4,829,294,142.42/85,115.80
  6. Step 6: Final answer
    x = 56,737.93

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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.