Home / 77,478.20-115,925.70-51,234.20

Finding the Fourth Proportional to 77,478.20, 115,925.70 and 51,234.20

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Solution

The fourth proportional to 77,478.20, 115,925.70 and 51,234.20 is: 76,658.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,478.20 : 115,925.70 = 51,234.20 : x
  2. Step 2: Convert to fraction form
    77,478.20/115,925.70 = 51,234.20/x
  3. Step 3: Cross multiply
    77,478.20x = 115,925.70 × 51,234.20
  4. Step 4: Simplify right side
    77,478.20x = 5,939,360,498.94
  5. Step 5: Solve for x
    x = 5,939,360,498.94/77,478.20
  6. Step 6: Final answer
    x = 76,658.47

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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.