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Finding the Fourth Proportional to 66,244.91, 99,201.20 and 39,574.45

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Solution

The fourth proportional to 66,244.91, 99,201.20 and 39,574.45 is: 59,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,244.91 : 99,201.20 = 39,574.45 : x
  2. Step 2: Convert to fraction form
    66,244.91/99,201.20 = 39,574.45/x
  3. Step 3: Cross multiply
    66,244.91x = 99,201.20 × 39,574.45
  4. Step 4: Simplify right side
    66,244.91x = 3,925,832,483.46
  5. Step 5: Solve for x
    x = 3,925,832,483.46/66,244.91
  6. Step 6: Final answer
    x = 59,262.40

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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.