Home / 51,459.15-77,148.41-20,317.71

Finding the Fourth Proportional to 51,459.15, 77,148.41 and 20,317.71

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Solution

The fourth proportional to 51,459.15, 77,148.41 and 20,317.71 is: 30,460.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,459.15 : 77,148.41 = 20,317.71 : x
  2. Step 2: Convert to fraction form
    51,459.15/77,148.41 = 20,317.71/x
  3. Step 3: Cross multiply
    51,459.15x = 77,148.41 × 20,317.71
  4. Step 4: Simplify right side
    51,459.15x = 1,567,478,919.75
  5. Step 5: Solve for x
    x = 1,567,478,919.75/51,459.15
  6. Step 6: Final answer
    x = 30,460.65

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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.