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Finding the Fourth Proportional to 74,770.88, 112,140.48 and 28,027.20

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Solution

The fourth proportional to 74,770.88, 112,140.48 and 28,027.20 is: 42,034.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,770.88 : 112,140.48 = 28,027.20 : x
  2. Step 2: Convert to fraction form
    74,770.88/112,140.48 = 28,027.20/x
  3. Step 3: Cross multiply
    74,770.88x = 112,140.48 × 28,027.20
  4. Step 4: Simplify right side
    74,770.88x = 3,142,983,661.06
  5. Step 5: Solve for x
    x = 3,142,983,661.06/74,770.88
  6. Step 6: Final answer
    x = 42,034.86

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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.