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Finding the Fourth Proportional to 92,280.10, 138,420.15 and 45,624.10

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Solution

The fourth proportional to 92,280.10, 138,420.15 and 45,624.10 is: 68,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,280.10 : 138,420.15 = 45,624.10 : x
  2. Step 2: Convert to fraction form
    92,280.10/138,420.15 = 45,624.10/x
  3. Step 3: Cross multiply
    92,280.10x = 138,420.15 × 45,624.10
  4. Step 4: Simplify right side
    92,280.10x = 6,315,294,765.62
  5. Step 5: Solve for x
    x = 6,315,294,765.62/92,280.10
  6. Step 6: Final answer
    x = 68,436.15

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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.