Home / 78,457.22-108,269.68-42,648.13

Finding the Fourth Proportional to 78,457.22, 108,269.68 and 42,648.13

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Solution

The fourth proportional to 78,457.22, 108,269.68 and 42,648.13 is: 58,853.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.22 : 108,269.68 = 42,648.13 : x
  2. Step 2: Convert to fraction form
    78,457.22/108,269.68 = 42,648.13/x
  3. Step 3: Cross multiply
    78,457.22x = 108,269.68 × 42,648.13
  4. Step 4: Simplify right side
    78,457.22x = 4,617,498,633.11
  5. Step 5: Solve for x
    x = 4,617,498,633.11/78,457.22
  6. Step 6: Final answer
    x = 58,853.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.