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Finding the Fourth Proportional to 87,510.63, 120,765.27 and 49,784.88

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Solution

The fourth proportional to 87,510.63, 120,765.27 and 49,784.88 is: 68,703.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,510.63 : 120,765.27 = 49,784.88 : x
  2. Step 2: Convert to fraction form
    87,510.63/120,765.27 = 49,784.88/x
  3. Step 3: Cross multiply
    87,510.63x = 120,765.27 × 49,784.88
  4. Step 4: Simplify right side
    87,510.63x = 6,012,283,871.29
  5. Step 5: Solve for x
    x = 6,012,283,871.29/87,510.63
  6. Step 6: Final answer
    x = 68,703.47

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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.