Home / 77,103.86-106,454.13-49,931.06

Finding the Fourth Proportional to 77,103.86, 106,454.13 and 49,931.06

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Solution

The fourth proportional to 77,103.86, 106,454.13 and 49,931.06 is: 68,937.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,103.86 : 106,454.13 = 49,931.06 : x
  2. Step 2: Convert to fraction form
    77,103.86/106,454.13 = 49,931.06/x
  3. Step 3: Cross multiply
    77,103.86x = 106,454.13 × 49,931.06
  4. Step 4: Simplify right side
    77,103.86x = 5,315,367,552.28
  5. Step 5: Solve for x
    x = 5,315,367,552.28/77,103.86
  6. Step 6: Final answer
    x = 68,937.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.