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Finding the Fourth Proportional to 91,168.84, 125,806.80 and 52,408

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Solution

The fourth proportional to 91,168.84, 125,806.80 and 52,408 is: 72,319.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,168.84 : 125,806.80 = 52,408 : x
  2. Step 2: Convert to fraction form
    91,168.84/125,806.80 = 52,408/x
  3. Step 3: Cross multiply
    91,168.84x = 125,806.80 × 52,408
  4. Step 4: Simplify right side
    91,168.84x = 6,593,282,774.40
  5. Step 5: Solve for x
    x = 6,593,282,774.40/91,168.84
  6. Step 6: Final answer
    x = 72,319.48

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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.