Home / 84,390.90-126,598.64-31,108.38

Finding the Fourth Proportional to 84,390.90, 126,598.64 and 31,108.38

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Solution

The fourth proportional to 84,390.90, 126,598.64 and 31,108.38 is: 46,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,390.90 : 126,598.64 = 31,108.38 : x
  2. Step 2: Convert to fraction form
    84,390.90/126,598.64 = 31,108.38/x
  3. Step 3: Cross multiply
    84,390.90x = 126,598.64 × 31,108.38
  4. Step 4: Simplify right side
    84,390.90x = 3,938,278,600.60
  5. Step 5: Solve for x
    x = 3,938,278,600.60/84,390.90
  6. Step 6: Final answer
    x = 46,667.10

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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.