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Finding the Fourth Proportional to 74,340.20, 111,510.30 and 61,874.30

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Solution

The fourth proportional to 74,340.20, 111,510.30 and 61,874.30 is: 92,811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,340.20 : 111,510.30 = 61,874.30 : x
  2. Step 2: Convert to fraction form
    74,340.20/111,510.30 = 61,874.30/x
  3. Step 3: Cross multiply
    74,340.20x = 111,510.30 × 61,874.30
  4. Step 4: Simplify right side
    74,340.20x = 6,899,621,755.29
  5. Step 5: Solve for x
    x = 6,899,621,755.29/74,340.20
  6. Step 6: Final answer
    x = 92,811.45

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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.