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Finding the Fourth Proportional to 87,392.40, 130,954.20 and 65,101.20

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Solution

The fourth proportional to 87,392.40, 130,954.20 and 65,101.20 is: 97,551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,392.40 : 130,954.20 = 65,101.20 : x
  2. Step 2: Convert to fraction form
    87,392.40/130,954.20 = 65,101.20/x
  3. Step 3: Cross multiply
    87,392.40x = 130,954.20 × 65,101.20
  4. Step 4: Simplify right side
    87,392.40x = 8,525,275,565.04
  5. Step 5: Solve for x
    x = 8,525,275,565.04/87,392.40
  6. Step 6: Final answer
    x = 97,551.68

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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.