Home / 65,245.08-90,036.72-38,381.70

Finding the Fourth Proportional to 65,245.08, 90,036.72 and 38,381.70

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Solution

The fourth proportional to 65,245.08, 90,036.72 and 38,381.70 is: 52,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,245.08 : 90,036.72 = 38,381.70 : x
  2. Step 2: Convert to fraction form
    65,245.08/90,036.72 = 38,381.70/x
  3. Step 3: Cross multiply
    65,245.08x = 90,036.72 × 38,381.70
  4. Step 4: Simplify right side
    65,245.08x = 3,455,762,376.02
  5. Step 5: Solve for x
    x = 3,455,762,376.02/65,245.08
  6. Step 6: Final answer
    x = 52,965.87

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1.5x scale

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.