Home / 51,176.79-76,765.19-19,990.17

Finding the Fourth Proportional to 51,176.79, 76,765.19 and 19,990.17

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Solution

The fourth proportional to 51,176.79, 76,765.19 and 19,990.17 is: 29,985.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,176.79 : 76,765.19 = 19,990.17 : x
  2. Step 2: Convert to fraction form
    51,176.79/76,765.19 = 19,990.17/x
  3. Step 3: Cross multiply
    51,176.79x = 76,765.19 × 19,990.17
  4. Step 4: Simplify right side
    51,176.79x = 1,534,549,298.39
  5. Step 5: Solve for x
    x = 1,534,549,298.39/51,176.79
  6. Step 6: Final answer
    x = 29,985.26

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Double scale
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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.