Home / 84,501.06-126,705.15-28,311.63

Finding the Fourth Proportional to 84,501.06, 126,705.15 and 28,311.63

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Solution

The fourth proportional to 84,501.06, 126,705.15 and 28,311.63 is: 42,451.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,501.06 : 126,705.15 = 28,311.63 : x
  2. Step 2: Convert to fraction form
    84,501.06/126,705.15 = 28,311.63/x
  3. Step 3: Cross multiply
    84,501.06x = 126,705.15 × 28,311.63
  4. Step 4: Simplify right side
    84,501.06x = 3,587,229,325.89
  5. Step 5: Solve for x
    x = 3,587,229,325.89/84,501.06
  6. Step 6: Final answer
    x = 42,451.89

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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.