Home / 84,106.73-126,160.10-31,509.38

Finding the Fourth Proportional to 84,106.73, 126,160.10 and 31,509.38

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Solution

The fourth proportional to 84,106.73, 126,160.10 and 31,509.38 is: 47,264.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,106.73 : 126,160.10 = 31,509.38 : x
  2. Step 2: Convert to fraction form
    84,106.73/126,160.10 = 31,509.38/x
  3. Step 3: Cross multiply
    84,106.73x = 126,160.10 × 31,509.38
  4. Step 4: Simplify right side
    84,106.73x = 3,975,226,531.74
  5. Step 5: Solve for x
    x = 3,975,226,531.74/84,106.73
  6. Step 6: Final answer
    x = 47,264.07

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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.