Home / 105,490.11-145,586.25-63,047.73

Finding the Fourth Proportional to 105,490.11, 145,586.25 and 63,047.73

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Solution

The fourth proportional to 105,490.11, 145,586.25 and 63,047.73 is: 87,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,490.11 : 145,586.25 = 63,047.73 : x
  2. Step 2: Convert to fraction form
    105,490.11/145,586.25 = 63,047.73/x
  3. Step 3: Cross multiply
    105,490.11x = 145,586.25 × 63,047.73
  4. Step 4: Simplify right side
    105,490.11x = 9,178,882,581.71
  5. Step 5: Solve for x
    x = 9,178,882,581.71/105,490.11
  6. Step 6: Final answer
    x = 87,011.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.