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Finding the Fourth Proportional to 99,549.62, 137,378.49 and 54,837.62

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Solution

The fourth proportional to 99,549.62, 137,378.49 and 54,837.62 is: 75,675.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,549.62 : 137,378.49 = 54,837.62 : x
  2. Step 2: Convert to fraction form
    99,549.62/137,378.49 = 54,837.62/x
  3. Step 3: Cross multiply
    99,549.62x = 137,378.49 × 54,837.62
  4. Step 4: Simplify right side
    99,549.62x = 7,533,509,430.79
  5. Step 5: Solve for x
    x = 7,533,509,430.79/99,549.62
  6. Step 6: Final answer
    x = 75,675.92

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1.5x scale

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.