Home / 66,423.40-99,622.80-19,665.16

Finding the Fourth Proportional to 66,423.40, 99,622.80 and 19,665.16

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Solution

The fourth proportional to 66,423.40, 99,622.80 and 19,665.16 is: 29,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423.40 : 99,622.80 = 19,665.16 : x
  2. Step 2: Convert to fraction form
    66,423.40/99,622.80 = 19,665.16/x
  3. Step 3: Cross multiply
    66,423.40x = 99,622.80 × 19,665.16
  4. Step 4: Simplify right side
    66,423.40x = 1,959,098,301.65
  5. Step 5: Solve for x
    x = 1,959,098,301.65/66,423.40
  6. Step 6: Final answer
    x = 29,494.10

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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.