Home / 81,424.09-112,373.49-45,620.47

Finding the Fourth Proportional to 81,424.09, 112,373.49 and 45,620.47

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Solution

The fourth proportional to 81,424.09, 112,373.49 and 45,620.47 is: 62,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.09 : 112,373.49 = 45,620.47 : x
  2. Step 2: Convert to fraction form
    81,424.09/112,373.49 = 45,620.47/x
  3. Step 3: Cross multiply
    81,424.09x = 112,373.49 × 45,620.47
  4. Step 4: Simplify right side
    81,424.09x = 5,126,531,429.34
  5. Step 5: Solve for x
    x = 5,126,531,429.34/81,424.09
  6. Step 6: Final answer
    x = 62,960.87

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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.