Home / 51,459.20-77,237.40-31,776.20

Finding the Fourth Proportional to 51,459.20, 77,237.40 and 31,776.20

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Solution

The fourth proportional to 51,459.20, 77,237.40 and 31,776.20 is: 47,694.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,459.20 : 77,237.40 = 31,776.20 : x
  2. Step 2: Convert to fraction form
    51,459.20/77,237.40 = 31,776.20/x
  3. Step 3: Cross multiply
    51,459.20x = 77,237.40 × 31,776.20
  4. Step 4: Simplify right side
    51,459.20x = 2,454,311,069.88
  5. Step 5: Solve for x
    x = 2,454,311,069.88/51,459.20
  6. Step 6: Final answer
    x = 47,694.31

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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.