Home / 90,915.97-136,395.41-28,586.47

Finding the Fourth Proportional to 90,915.97, 136,395.41 and 28,586.47

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Solution

The fourth proportional to 90,915.97, 136,395.41 and 28,586.47 is: 42,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,915.97 : 136,395.41 = 28,586.47 : x
  2. Step 2: Convert to fraction form
    90,915.97/136,395.41 = 28,586.47/x
  3. Step 3: Cross multiply
    90,915.97x = 136,395.41 × 28,586.47
  4. Step 4: Simplify right side
    90,915.97x = 3,899,063,296.10
  5. Step 5: Solve for x
    x = 3,899,063,296.10/90,915.97
  6. Step 6: Final answer
    x = 42,886.45

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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.