Home / 66,581.52-99,886.68-19,838.16

Finding the Fourth Proportional to 66,581.52, 99,886.68 and 19,838.16

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Solution

The fourth proportional to 66,581.52, 99,886.68 and 19,838.16 is: 29,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,581.52 : 99,886.68 = 19,838.16 : x
  2. Step 2: Convert to fraction form
    66,581.52/99,886.68 = 19,838.16/x
  3. Step 3: Cross multiply
    66,581.52x = 99,886.68 × 19,838.16
  4. Step 4: Simplify right side
    66,581.52x = 1,981,567,939.71
  5. Step 5: Solve for x
    x = 1,981,567,939.71/66,581.52
  6. Step 6: Final answer
    x = 29,761.53

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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.