Home / 84,290.90-126,455.18-31,700.84

Finding the Fourth Proportional to 84,290.90, 126,455.18 and 31,700.84

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Solution

The fourth proportional to 84,290.90, 126,455.18 and 31,700.84 is: 47,558.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,290.90 : 126,455.18 = 31,700.84 : x
  2. Step 2: Convert to fraction form
    84,290.90/126,455.18 = 31,700.84/x
  3. Step 3: Cross multiply
    84,290.90x = 126,455.18 × 31,700.84
  4. Step 4: Simplify right side
    84,290.90x = 4,008,734,637.57
  5. Step 5: Solve for x
    x = 4,008,734,637.57/84,290.90
  6. Step 6: Final answer
    x = 47,558.34

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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.