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Finding the Fourth Proportional to 88,373.88, 121,915.67 and 52,543.53

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Solution

The fourth proportional to 88,373.88, 121,915.67 and 52,543.53 is: 72,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,373.88 : 121,915.67 = 52,543.53 : x
  2. Step 2: Convert to fraction form
    88,373.88/121,915.67 = 52,543.53/x
  3. Step 3: Cross multiply
    88,373.88x = 121,915.67 × 52,543.53
  4. Step 4: Simplify right side
    88,373.88x = 6,405,879,401.40
  5. Step 5: Solve for x
    x = 6,405,879,401.40/88,373.88
  6. Step 6: Final answer
    x = 72,486.12

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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.