Home / 90,862.36-136,288.52-31,702.19

Finding the Fourth Proportional to 90,862.36, 136,288.52 and 31,702.19

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Solution

The fourth proportional to 90,862.36, 136,288.52 and 31,702.19 is: 47,551.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,862.36 : 136,288.52 = 31,702.19 : x
  2. Step 2: Convert to fraction form
    90,862.36/136,288.52 = 31,702.19/x
  3. Step 3: Cross multiply
    90,862.36x = 136,288.52 × 31,702.19
  4. Step 4: Simplify right side
    90,862.36x = 4,320,644,013.11
  5. Step 5: Solve for x
    x = 4,320,644,013.11/90,862.36
  6. Step 6: Final answer
    x = 47,551.53

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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.