Home / 66,519.69-99,726.55-38,407.86

Finding the Fourth Proportional to 66,519.69, 99,726.55 and 38,407.86

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Solution

The fourth proportional to 66,519.69, 99,726.55 and 38,407.86 is: 57,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,519.69 : 99,726.55 = 38,407.86 : x
  2. Step 2: Convert to fraction form
    66,519.69/99,726.55 = 38,407.86/x
  3. Step 3: Cross multiply
    66,519.69x = 99,726.55 × 38,407.86
  4. Step 4: Simplify right side
    66,519.69x = 3,830,282,872.05
  5. Step 5: Solve for x
    x = 3,830,282,872.05/66,519.69
  6. Step 6: Final answer
    x = 57,581.19

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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.