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Finding the Fourth Proportional to 89,968, 124,166.78 and 52,242.25

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Solution

The fourth proportional to 89,968, 124,166.78 and 52,242.25 is: 72,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,968 : 124,166.78 = 52,242.25 : x
  2. Step 2: Convert to fraction form
    89,968/124,166.78 = 52,242.25/x
  3. Step 3: Cross multiply
    89,968x = 124,166.78 × 52,242.25
  4. Step 4: Simplify right side
    89,968x = 6,486,751,962.46
  5. Step 5: Solve for x
    x = 6,486,751,962.46/89,968
  6. Step 6: Final answer
    x = 72,100.66

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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.