Home / 90,947.34-136,379.70-38,328.12

Finding the Fourth Proportional to 90,947.34, 136,379.70 and 38,328.12

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Solution

The fourth proportional to 90,947.34, 136,379.70 and 38,328.12 is: 57,474.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,947.34 : 136,379.70 = 38,328.12 : x
  2. Step 2: Convert to fraction form
    90,947.34/136,379.70 = 38,328.12/x
  3. Step 3: Cross multiply
    90,947.34x = 136,379.70 × 38,328.12
  4. Step 4: Simplify right side
    90,947.34x = 5,227,177,507.16
  5. Step 5: Solve for x
    x = 5,227,177,507.16/90,947.34
  6. Step 6: Final answer
    x = 57,474.77

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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.