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Finding the Fourth Proportional to 74,627.20, 112,027.20 and 45,078.40

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Solution

The fourth proportional to 74,627.20, 112,027.20 and 45,078.40 is: 67,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,627.20 : 112,027.20 = 45,078.40 : x
  2. Step 2: Convert to fraction form
    74,627.20/112,027.20 = 45,078.40/x
  3. Step 3: Cross multiply
    74,627.20x = 112,027.20 × 45,078.40
  4. Step 4: Simplify right side
    74,627.20x = 5,050,006,932.48
  5. Step 5: Solve for x
    x = 5,050,006,932.48/74,627.20
  6. Step 6: Final answer
    x = 67,669.79

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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.