Home / 84,087.72-126,131.58-31,483.08

Finding the Fourth Proportional to 84,087.72, 126,131.58 and 31,483.08

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Solution

The fourth proportional to 84,087.72, 126,131.58 and 31,483.08 is: 47,224.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,087.72 : 126,131.58 = 31,483.08 : x
  2. Step 2: Convert to fraction form
    84,087.72/126,131.58 = 31,483.08/x
  3. Step 3: Cross multiply
    84,087.72x = 126,131.58 × 31,483.08
  4. Step 4: Simplify right side
    84,087.72x = 3,971,010,623.67
  5. Step 5: Solve for x
    x = 3,971,010,623.67/84,087.72
  6. Step 6: Final answer
    x = 47,224.62

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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.