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Finding the Fourth Proportional to 90,377.84, 124,707.29 and 52,138.82

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Solution

The fourth proportional to 90,377.84, 124,707.29 and 52,138.82 is: 71,943.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,377.84 : 124,707.29 = 52,138.82 : x
  2. Step 2: Convert to fraction form
    90,377.84/124,707.29 = 52,138.82/x
  3. Step 3: Cross multiply
    90,377.84x = 124,707.29 × 52,138.82
  4. Step 4: Simplify right side
    90,377.84x = 6,502,090,061.77
  5. Step 5: Solve for x
    x = 6,502,090,061.77/90,377.84
  6. Step 6: Final answer
    x = 71,943.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.