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Finding the Fourth Proportional to 74,921.60, 112,348.56 and 39,853.76

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Solution

The fourth proportional to 74,921.60, 112,348.56 and 39,853.76 is: 59,762.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,921.60 : 112,348.56 = 39,853.76 : x
  2. Step 2: Convert to fraction form
    74,921.60/112,348.56 = 39,853.76/x
  3. Step 3: Cross multiply
    74,921.60x = 112,348.56 × 39,853.76
  4. Step 4: Simplify right side
    74,921.60x = 4,477,512,546.59
  5. Step 5: Solve for x
    x = 4,477,512,546.59/74,921.60
  6. Step 6: Final answer
    x = 59,762.64

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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.