Home / 51,456.44-77,140.29-19,888.65

Finding the Fourth Proportional to 51,456.44, 77,140.29 and 19,888.65

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Solution

The fourth proportional to 51,456.44, 77,140.29 and 19,888.65 is: 29,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,456.44 : 77,140.29 = 19,888.65 : x
  2. Step 2: Convert to fraction form
    51,456.44/77,140.29 = 19,888.65/x
  3. Step 3: Cross multiply
    51,456.44x = 77,140.29 × 19,888.65
  4. Step 4: Simplify right side
    51,456.44x = 1,534,216,228.71
  5. Step 5: Solve for x
    x = 1,534,216,228.71/51,456.44
  6. Step 6: Final answer
    x = 29,815.83

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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.