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Finding the Fourth Proportional to 61,408.60, 91,894.20 and 42,600.40

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Solution

The fourth proportional to 61,408.60, 91,894.20 and 42,600.40 is: 63,748.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,408.60 : 91,894.20 = 42,600.40 : x
  2. Step 2: Convert to fraction form
    61,408.60/91,894.20 = 42,600.40/x
  3. Step 3: Cross multiply
    61,408.60x = 91,894.20 × 42,600.40
  4. Step 4: Simplify right side
    61,408.60x = 3,914,729,677.68
  5. Step 5: Solve for x
    x = 3,914,729,677.68/61,408.60
  6. Step 6: Final answer
    x = 63,748.88

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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.