Home / 54,312.12-74,941.20-30,439.80

Finding the Fourth Proportional to 54,312.12, 74,941.20 and 30,439.80

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Solution

The fourth proportional to 54,312.12, 74,941.20 and 30,439.80 is: 42,001.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,312.12 : 74,941.20 = 30,439.80 : x
  2. Step 2: Convert to fraction form
    54,312.12/74,941.20 = 30,439.80/x
  3. Step 3: Cross multiply
    54,312.12x = 74,941.20 × 30,439.80
  4. Step 4: Simplify right side
    54,312.12x = 2,281,195,139.76
  5. Step 5: Solve for x
    x = 2,281,195,139.76/54,312.12
  6. Step 6: Final answer
    x = 42,001.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.