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Finding the Fourth Proportional to 87,336.48, 120,518.76 and 51,528

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Solution

The fourth proportional to 87,336.48, 120,518.76 and 51,528 is: 71,105.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,336.48 : 120,518.76 = 51,528 : x
  2. Step 2: Convert to fraction form
    87,336.48/120,518.76 = 51,528/x
  3. Step 3: Cross multiply
    87,336.48x = 120,518.76 × 51,528
  4. Step 4: Simplify right side
    87,336.48x = 6,210,090,665.28
  5. Step 5: Solve for x
    x = 6,210,090,665.28/87,336.48
  6. Step 6: Final answer
    x = 71,105.35

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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.