Home / 78,926.16-108,917.96-45,398.48

Finding the Fourth Proportional to 78,926.16, 108,917.96 and 45,398.48

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Solution

The fourth proportional to 78,926.16, 108,917.96 and 45,398.48 is: 62,649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,926.16 : 108,917.96 = 45,398.48 : x
  2. Step 2: Convert to fraction form
    78,926.16/108,917.96 = 45,398.48/x
  3. Step 3: Cross multiply
    78,926.16x = 108,917.96 × 45,398.48
  4. Step 4: Simplify right side
    78,926.16x = 4,944,709,828.70
  5. Step 5: Solve for x
    x = 4,944,709,828.70/78,926.16
  6. Step 6: Final answer
    x = 62,649.82

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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.