Home / 77,079.20-115,684.64-54,946.72

Finding the Fourth Proportional to 77,079.20, 115,684.64 and 54,946.72

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Solution

The fourth proportional to 77,079.20, 115,684.64 and 54,946.72 is: 82,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,079.20 : 115,684.64 = 54,946.72 : x
  2. Step 2: Convert to fraction form
    77,079.20/115,684.64 = 54,946.72/x
  3. Step 3: Cross multiply
    77,079.20x = 115,684.64 × 54,946.72
  4. Step 4: Simplify right side
    77,079.20x = 6,356,491,522.38
  5. Step 5: Solve for x
    x = 6,356,491,522.38/77,079.20
  6. Step 6: Final answer
    x = 82,467.01

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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.