Home / 90,916.63-136,380.41-28,587.13

Finding the Fourth Proportional to 90,916.63, 136,380.41 and 28,587.13

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Solution

The fourth proportional to 90,916.63, 136,380.41 and 28,587.13 is: 42,882.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,916.63 : 136,380.41 = 28,587.13 : x
  2. Step 2: Convert to fraction form
    90,916.63/136,380.41 = 28,587.13/x
  3. Step 3: Cross multiply
    90,916.63x = 136,380.41 × 28,587.13
  4. Step 4: Simplify right side
    90,916.63x = 3,898,724,510.12
  5. Step 5: Solve for x
    x = 3,898,724,510.12/90,916.63
  6. Step 6: Final answer
    x = 42,882.41

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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.