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Finding the Fourth Proportional to 87,193.92, 130,852.98 and 39,815.40

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Solution

The fourth proportional to 87,193.92, 130,852.98 and 39,815.40 is: 59,751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,193.92 : 130,852.98 = 39,815.40 : x
  2. Step 2: Convert to fraction form
    87,193.92/130,852.98 = 39,815.40/x
  3. Step 3: Cross multiply
    87,193.92x = 130,852.98 × 39,815.40
  4. Step 4: Simplify right side
    87,193.92x = 5,209,963,739.89
  5. Step 5: Solve for x
    x = 5,209,963,739.89/87,193.92
  6. Step 6: Final answer
    x = 59,751.46

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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.