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Finding the Fourth Proportional to 78,781.74, 118,172.55 and 23,377.74

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Solution

The fourth proportional to 78,781.74, 118,172.55 and 23,377.74 is: 35,066.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,781.74 : 118,172.55 = 23,377.74 : x
  2. Step 2: Convert to fraction form
    78,781.74/118,172.55 = 23,377.74/x
  3. Step 3: Cross multiply
    78,781.74x = 118,172.55 × 23,377.74
  4. Step 4: Simplify right side
    78,781.74x = 2,762,607,149.04
  5. Step 5: Solve for x
    x = 2,762,607,149.04/78,781.74
  6. Step 6: Final answer
    x = 35,066.59

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1.5x scale

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.