Home / 66,143.28-99,215.73-19,397.10

Finding the Fourth Proportional to 66,143.28, 99,215.73 and 19,397.10

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Solution

The fourth proportional to 66,143.28, 99,215.73 and 19,397.10 is: 29,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.28 : 99,215.73 = 19,397.10 : x
  2. Step 2: Convert to fraction form
    66,143.28/99,215.73 = 19,397.10/x
  3. Step 3: Cross multiply
    66,143.28x = 99,215.73 × 19,397.10
  4. Step 4: Simplify right side
    66,143.28x = 1,924,497,436.38
  5. Step 5: Solve for x
    x = 1,924,497,436.38/66,143.28
  6. Step 6: Final answer
    x = 29,095.89

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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.