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Finding the Fourth Proportional to 90,282.88, 135,386.88 and 34,113.28

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Solution

The fourth proportional to 90,282.88, 135,386.88 and 34,113.28 is: 51,155.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,282.88 : 135,386.88 = 34,113.28 : x
  2. Step 2: Convert to fraction form
    90,282.88/135,386.88 = 34,113.28/x
  3. Step 3: Cross multiply
    90,282.88x = 135,386.88 × 34,113.28
  4. Step 4: Simplify right side
    90,282.88x = 4,618,490,545.77
  5. Step 5: Solve for x
    x = 4,618,490,545.77/90,282.88
  6. Step 6: Final answer
    x = 51,155.77

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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.