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Finding the Fourth Proportional to 89,418, 123,400.08 and 51,184.56

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Solution

The fourth proportional to 89,418, 123,400.08 and 51,184.56 is: 70,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,418 : 123,400.08 = 51,184.56 : x
  2. Step 2: Convert to fraction form
    89,418/123,400.08 = 51,184.56/x
  3. Step 3: Cross multiply
    89,418x = 123,400.08 × 51,184.56
  4. Step 4: Simplify right side
    89,418x = 6,316,178,798.76
  5. Step 5: Solve for x
    x = 6,316,178,798.76/89,418
  6. Step 6: Final answer
    x = 70,636.55

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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.