Home / 51,987.23-77,980.85-20,412.16

Finding the Fourth Proportional to 51,987.23, 77,980.85 and 20,412.16

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Solution

The fourth proportional to 51,987.23, 77,980.85 and 20,412.16 is: 30,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,987.23 : 77,980.85 = 20,412.16 : x
  2. Step 2: Convert to fraction form
    51,987.23/77,980.85 = 20,412.16/x
  3. Step 3: Cross multiply
    51,987.23x = 77,980.85 × 20,412.16
  4. Step 4: Simplify right side
    51,987.23x = 1,591,757,587.14
  5. Step 5: Solve for x
    x = 1,591,757,587.14/51,987.23
  6. Step 6: Final answer
    x = 30,618.24

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Similar ratio
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1.5x scale

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.