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Finding the Fourth Proportional to 90,161.52, 124,370.16 and 54,328.80

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Solution

The fourth proportional to 90,161.52, 124,370.16 and 54,328.80 is: 74,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,161.52 : 124,370.16 = 54,328.80 : x
  2. Step 2: Convert to fraction form
    90,161.52/124,370.16 = 54,328.80/x
  3. Step 3: Cross multiply
    90,161.52x = 124,370.16 × 54,328.80
  4. Step 4: Simplify right side
    90,161.52x = 6,756,881,548.61
  5. Step 5: Solve for x
    x = 6,756,881,548.61/90,161.52
  6. Step 6: Final answer
    x = 74,941.97

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