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Finding the Fourth Proportional to 92,281.60, 138,422.40 and 45,625.60

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Solution

The fourth proportional to 92,281.60, 138,422.40 and 45,625.60 is: 68,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,281.60 : 138,422.40 = 45,625.60 : x
  2. Step 2: Convert to fraction form
    92,281.60/138,422.40 = 45,625.60/x
  3. Step 3: Cross multiply
    92,281.60x = 138,422.40 × 45,625.60
  4. Step 4: Simplify right side
    92,281.60x = 6,315,605,053.44
  5. Step 5: Solve for x
    x = 6,315,605,053.44/92,281.60
  6. Step 6: Final answer
    x = 68,438.40

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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.