Home / 52,010.16-77,979.88-20,400.40

Finding the Fourth Proportional to 52,010.16, 77,979.88 and 20,400.40

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Solution

The fourth proportional to 52,010.16, 77,979.88 and 20,400.40 is: 30,586.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,010.16 : 77,979.88 = 20,400.40 : x
  2. Step 2: Convert to fraction form
    52,010.16/77,979.88 = 20,400.40/x
  3. Step 3: Cross multiply
    52,010.16x = 77,979.88 × 20,400.40
  4. Step 4: Simplify right side
    52,010.16x = 1,590,820,743.95
  5. Step 5: Solve for x
    x = 1,590,820,743.95/52,010.16
  6. Step 6: Final answer
    x = 30,586.73

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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.