Home / 49,486.80-74,129.40-30,709.20

Finding the Fourth Proportional to 49,486.80, 74,129.40 and 30,709.20

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Solution

The fourth proportional to 49,486.80, 74,129.40 and 30,709.20 is: 46,001.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,486.80 : 74,129.40 = 30,709.20 : x
  2. Step 2: Convert to fraction form
    49,486.80/74,129.40 = 30,709.20/x
  3. Step 3: Cross multiply
    49,486.80x = 74,129.40 × 30,709.20
  4. Step 4: Simplify right side
    49,486.80x = 2,276,454,570.48
  5. Step 5: Solve for x
    x = 2,276,454,570.48/49,486.80
  6. Step 6: Final answer
    x = 46,001.25

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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.