Home / 51,601.40-77,329.20-31,821.20

Finding the Fourth Proportional to 51,601.40, 77,329.20 and 31,821.20

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Solution

The fourth proportional to 51,601.40, 77,329.20 and 31,821.20 is: 47,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,601.40 : 77,329.20 = 31,821.20 : x
  2. Step 2: Convert to fraction form
    51,601.40/77,329.20 = 31,821.20/x
  3. Step 3: Cross multiply
    51,601.40x = 77,329.20 × 31,821.20
  4. Step 4: Simplify right side
    51,601.40x = 2,460,707,939.04
  5. Step 5: Solve for x
    x = 2,460,707,939.04/51,601.40
  6. Step 6: Final answer
    x = 47,686.84

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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.