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Finding the Fourth Proportional to 87,248.94, 130,888.74 and 45,117.54

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Solution

The fourth proportional to 87,248.94, 130,888.74 and 45,117.54 is: 67,684.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,248.94 : 130,888.74 = 45,117.54 : x
  2. Step 2: Convert to fraction form
    87,248.94/130,888.74 = 45,117.54/x
  3. Step 3: Cross multiply
    87,248.94x = 130,888.74 × 45,117.54
  4. Step 4: Simplify right side
    87,248.94x = 5,905,377,962.50
  5. Step 5: Solve for x
    x = 5,905,377,962.50/87,248.94
  6. Step 6: Final answer
    x = 67,684.24

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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.