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Finding the Fourth Proportional to 74,886.88, 112,330.11 and 30,503.20

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Solution

The fourth proportional to 74,886.88, 112,330.11 and 30,503.20 is: 45,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,886.88 : 112,330.11 = 30,503.20 : x
  2. Step 2: Convert to fraction form
    74,886.88/112,330.11 = 30,503.20/x
  3. Step 3: Cross multiply
    74,886.88x = 112,330.11 × 30,503.20
  4. Step 4: Simplify right side
    74,886.88x = 3,426,427,811.35
  5. Step 5: Solve for x
    x = 3,426,427,811.35/74,886.88
  6. Step 6: Final answer
    x = 45,754.71

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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.