Home / 81,790.13-112,867.38-45,983.45

Finding the Fourth Proportional to 81,790.13, 112,867.38 and 45,983.45

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Solution

The fourth proportional to 81,790.13, 112,867.38 and 45,983.45 is: 63,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,790.13 : 112,867.38 = 45,983.45 : x
  2. Step 2: Convert to fraction form
    81,790.13/112,867.38 = 45,983.45/x
  3. Step 3: Cross multiply
    81,790.13x = 112,867.38 × 45,983.45
  4. Step 4: Simplify right side
    81,790.13x = 5,190,031,524.86
  5. Step 5: Solve for x
    x = 5,190,031,524.86/81,790.13
  6. Step 6: Final answer
    x = 63,455.47

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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.