Home / 84,636.60-126,963.32-31,342.84

Finding the Fourth Proportional to 84,636.60, 126,963.32 and 31,342.84

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Solution

The fourth proportional to 84,636.60, 126,963.32 and 31,342.84 is: 47,017.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,636.60 : 126,963.32 = 31,342.84 : x
  2. Step 2: Convert to fraction form
    84,636.60/126,963.32 = 31,342.84/x
  3. Step 3: Cross multiply
    84,636.60x = 126,963.32 × 31,342.84
  4. Step 4: Simplify right side
    84,636.60x = 3,979,391,024.63
  5. Step 5: Solve for x
    x = 3,979,391,024.63/84,636.60
  6. Step 6: Final answer
    x = 47,017.38

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1.5x scale

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.