Home / 51,405.64-77,115.68-15,869.86

Finding the Fourth Proportional to 51,405.64, 77,115.68 and 15,869.86

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Solution

The fourth proportional to 51,405.64, 77,115.68 and 15,869.86 is: 23,807.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.64 : 77,115.68 = 15,869.86 : x
  2. Step 2: Convert to fraction form
    51,405.64/77,115.68 = 15,869.86/x
  3. Step 3: Cross multiply
    51,405.64x = 77,115.68 × 15,869.86
  4. Step 4: Simplify right side
    51,405.64x = 1,223,815,045.40
  5. Step 5: Solve for x
    x = 1,223,815,045.40/51,405.64
  6. Step 6: Final answer
    x = 23,807.02

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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.