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Finding the Fourth Proportional to 74,959.80, 112,482.90 and 28,246.20

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Solution

The fourth proportional to 74,959.80, 112,482.90 and 28,246.20 is: 42,385.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,959.80 : 112,482.90 = 28,246.20 : x
  2. Step 2: Convert to fraction form
    74,959.80/112,482.90 = 28,246.20/x
  3. Step 3: Cross multiply
    74,959.80x = 112,482.90 × 28,246.20
  4. Step 4: Simplify right side
    74,959.80x = 3,177,214,489.98
  5. Step 5: Solve for x
    x = 3,177,214,489.98/74,959.80
  6. Step 6: Final answer
    x = 42,385.58

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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.