Home / 49,400.40-74,110.20-21,320.40

Finding the Fourth Proportional to 49,400.40, 74,110.20 and 21,320.40

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Solution

The fourth proportional to 49,400.40, 74,110.20 and 21,320.40 is: 31,984.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,400.40 : 74,110.20 = 21,320.40 : x
  2. Step 2: Convert to fraction form
    49,400.40/74,110.20 = 21,320.40/x
  3. Step 3: Cross multiply
    49,400.40x = 74,110.20 × 21,320.40
  4. Step 4: Simplify right side
    49,400.40x = 1,580,059,108.08
  5. Step 5: Solve for x
    x = 1,580,059,108.08/49,400.40
  6. Step 6: Final answer
    x = 31,984.74

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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.