Home / 90,862.90-136,440.15-61,411.30

Finding the Fourth Proportional to 90,862.90, 136,440.15 and 61,411.30

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Solution

The fourth proportional to 90,862.90, 136,440.15 and 61,411.30 is: 92,215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,862.90 : 136,440.15 = 61,411.30 : x
  2. Step 2: Convert to fraction form
    90,862.90/136,440.15 = 61,411.30/x
  3. Step 3: Cross multiply
    90,862.90x = 136,440.15 × 61,411.30
  4. Step 4: Simplify right side
    90,862.90x = 8,378,966,983.70
  5. Step 5: Solve for x
    x = 8,378,966,983.70/90,862.90
  6. Step 6: Final answer
    x = 92,215.49

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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.