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Finding the Fourth Proportional to 85,035.76, 127,495.84 and 47,621.52

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Solution

The fourth proportional to 85,035.76, 127,495.84 and 47,621.52 is: 71,399.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,035.76 : 127,495.84 = 47,621.52 : x
  2. Step 2: Convert to fraction form
    85,035.76/127,495.84 = 47,621.52/x
  3. Step 3: Cross multiply
    85,035.76x = 127,495.84 × 47,621.52
  4. Step 4: Simplify right side
    85,035.76x = 6,071,545,694.48
  5. Step 5: Solve for x
    x = 6,071,545,694.48/85,035.76
  6. Step 6: Final answer
    x = 71,399.91

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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.