Home / 49,417.20-74,125.80-30,390.30

Finding the Fourth Proportional to 49,417.20, 74,125.80 and 30,390.30

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Solution

The fourth proportional to 49,417.20, 74,125.80 and 30,390.30 is: 45,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,417.20 : 74,125.80 = 30,390.30 : x
  2. Step 2: Convert to fraction form
    49,417.20/74,125.80 = 30,390.30/x
  3. Step 3: Cross multiply
    49,417.20x = 74,125.80 × 30,390.30
  4. Step 4: Simplify right side
    49,417.20x = 2,252,705,299.74
  5. Step 5: Solve for x
    x = 2,252,705,299.74/49,417.20
  6. Step 6: Final answer
    x = 45,585.45

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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.