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Finding the Fourth Proportional to 84,011.89, 126,041.19 and 36,631.12

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Solution

The fourth proportional to 84,011.89, 126,041.19 and 36,631.12 is: 54,956.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,011.89 : 126,041.19 = 36,631.12 : x
  2. Step 2: Convert to fraction form
    84,011.89/126,041.19 = 36,631.12/x
  3. Step 3: Cross multiply
    84,011.89x = 126,041.19 × 36,631.12
  4. Step 4: Simplify right side
    84,011.89x = 4,617,029,955.83
  5. Step 5: Solve for x
    x = 4,617,029,955.83/84,011.89
  6. Step 6: Final answer
    x = 54,956.86

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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.