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Finding the Fourth Proportional to 66,573.28, 99,859.92 and 27,123.45

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Solution

The fourth proportional to 66,573.28, 99,859.92 and 27,123.45 is: 40,685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,573.28 : 99,859.92 = 27,123.45 : x
  2. Step 2: Convert to fraction form
    66,573.28/99,859.92 = 27,123.45/x
  3. Step 3: Cross multiply
    66,573.28x = 99,859.92 × 27,123.45
  4. Step 4: Simplify right side
    66,573.28x = 2,708,545,547.12
  5. Step 5: Solve for x
    x = 2,708,545,547.12/66,573.28
  6. Step 6: Final answer
    x = 40,685.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.