Home / 78,908.48-118,363.17-26,317.81

Finding the Fourth Proportional to 78,908.48, 118,363.17 and 26,317.81

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Solution

The fourth proportional to 78,908.48, 118,363.17 and 26,317.81 is: 39,476.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,908.48 : 118,363.17 = 26,317.81 : x
  2. Step 2: Convert to fraction form
    78,908.48/118,363.17 = 26,317.81/x
  3. Step 3: Cross multiply
    78,908.48x = 118,363.17 × 26,317.81
  4. Step 4: Simplify right side
    78,908.48x = 3,115,059,287.47
  5. Step 5: Solve for x
    x = 3,115,059,287.47/78,908.48
  6. Step 6: Final answer
    x = 39,476.87

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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.