Home / 83,790.09-125,726.13-39,421.35

Finding the Fourth Proportional to 83,790.09, 125,726.13 and 39,421.35

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Solution

The fourth proportional to 83,790.09, 125,726.13 and 39,421.35 is: 59,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,790.09 : 125,726.13 = 39,421.35 : x
  2. Step 2: Convert to fraction form
    83,790.09/125,726.13 = 39,421.35/x
  3. Step 3: Cross multiply
    83,790.09x = 125,726.13 × 39,421.35
  4. Step 4: Simplify right side
    83,790.09x = 4,956,293,774.88
  5. Step 5: Solve for x
    x = 4,956,293,774.88/83,790.09
  6. Step 6: Final answer
    x = 59,151.31

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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.