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Finding the Fourth Proportional to 99,440.40, 137,227.74 and 54,728.40

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Solution

The fourth proportional to 99,440.40, 137,227.74 and 54,728.40 is: 75,525.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,440.40 : 137,227.74 = 54,728.40 : x
  2. Step 2: Convert to fraction form
    99,440.40/137,227.74 = 54,728.40/x
  3. Step 3: Cross multiply
    99,440.40x = 137,227.74 × 54,728.40
  4. Step 4: Simplify right side
    99,440.40x = 7,510,254,645.82
  5. Step 5: Solve for x
    x = 7,510,254,645.82/99,440.40
  6. Step 6: Final answer
    x = 75,525.19

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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.