Home / 84,320.51-126,468-31,717.76

Finding the Fourth Proportional to 84,320.51, 126,468 and 31,717.76

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Solution

The fourth proportional to 84,320.51, 126,468 and 31,717.76 is: 47,571.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,320.51 : 126,468 = 31,717.76 : x
  2. Step 2: Convert to fraction form
    84,320.51/126,468 = 31,717.76/x
  3. Step 3: Cross multiply
    84,320.51x = 126,468 × 31,717.76
  4. Step 4: Simplify right side
    84,320.51x = 4,011,281,039.34
  5. Step 5: Solve for x
    x = 4,011,281,039.34/84,320.51
  6. Step 6: Final answer
    x = 47,571.83

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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.