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Finding the Fourth Proportional to 67,987.80, 101,983.32 and 25,862.40

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Solution

The fourth proportional to 67,987.80, 101,983.32 and 25,862.40 is: 38,794.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.80 : 101,983.32 = 25,862.40 : x
  2. Step 2: Convert to fraction form
    67,987.80/101,983.32 = 25,862.40/x
  3. Step 3: Cross multiply
    67,987.80x = 101,983.32 × 25,862.40
  4. Step 4: Simplify right side
    67,987.80x = 2,637,533,415.17
  5. Step 5: Solve for x
    x = 2,637,533,415.17/67,987.80
  6. Step 6: Final answer
    x = 38,794.22

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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.