Home / 51,979.40-77,975.19-18,235.10

Finding the Fourth Proportional to 51,979.40, 77,975.19 and 18,235.10

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Solution

The fourth proportional to 51,979.40, 77,975.19 and 18,235.10 is: 27,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,979.40 : 77,975.19 = 18,235.10 : x
  2. Step 2: Convert to fraction form
    51,979.40/77,975.19 = 18,235.10/x
  3. Step 3: Cross multiply
    51,979.40x = 77,975.19 × 18,235.10
  4. Step 4: Simplify right side
    51,979.40x = 1,421,884,997.29
  5. Step 5: Solve for x
    x = 1,421,884,997.29/51,979.40
  6. Step 6: Final answer
    x = 27,354.78

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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.