Home / 51,805.60-77,689.36-18,516.68

Finding the Fourth Proportional to 51,805.60, 77,689.36 and 18,516.68

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Solution

The fourth proportional to 51,805.60, 77,689.36 and 18,516.68 is: 27,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,805.60 : 77,689.36 = 18,516.68 : x
  2. Step 2: Convert to fraction form
    51,805.60/77,689.36 = 18,516.68/x
  3. Step 3: Cross multiply
    51,805.60x = 77,689.36 × 18,516.68
  4. Step 4: Simplify right side
    51,805.60x = 1,438,549,018.52
  5. Step 5: Solve for x
    x = 1,438,549,018.52/51,805.60
  6. Step 6: Final answer
    x = 27,768.21

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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.