Home / 79,477.17-109,672.13-45,477.86

Finding the Fourth Proportional to 79,477.17, 109,672.13 and 45,477.86

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Solution

The fourth proportional to 79,477.17, 109,672.13 and 45,477.86 is: 62,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,477.17 : 109,672.13 = 45,477.86 : x
  2. Step 2: Convert to fraction form
    79,477.17/109,672.13 = 45,477.86/x
  3. Step 3: Cross multiply
    79,477.17x = 109,672.13 × 45,477.86
  4. Step 4: Simplify right side
    79,477.17x = 4,987,654,161.92
  5. Step 5: Solve for x
    x = 4,987,654,161.92/79,477.17
  6. Step 6: Final answer
    x = 62,755.81

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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.