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Finding the Fourth Proportional to 92,610.60, 138,915.90 and 30,281.10

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Solution

The fourth proportional to 92,610.60, 138,915.90 and 30,281.10 is: 45,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,610.60 : 138,915.90 = 30,281.10 : x
  2. Step 2: Convert to fraction form
    92,610.60/138,915.90 = 30,281.10/x
  3. Step 3: Cross multiply
    92,610.60x = 138,915.90 × 30,281.10
  4. Step 4: Simplify right side
    92,610.60x = 4,206,526,259.49
  5. Step 5: Solve for x
    x = 4,206,526,259.49/92,610.60
  6. Step 6: Final answer
    x = 45,421.65

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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.