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Finding the Fourth Proportional to 90,374, 124,707.18 and 52,137.02

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Solution

The fourth proportional to 90,374, 124,707.18 and 52,137.02 is: 71,943.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,374 : 124,707.18 = 52,137.02 : x
  2. Step 2: Convert to fraction form
    90,374/124,707.18 = 52,137.02/x
  3. Step 3: Cross multiply
    90,374x = 124,707.18 × 52,137.02
  4. Step 4: Simplify right side
    90,374x = 6,501,860,737.80
  5. Step 5: Solve for x
    x = 6,501,860,737.80/90,374
  6. Step 6: Final answer
    x = 71,943.93

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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.