Home / 58,319.32-80,439.20-38,928.45

Finding the Fourth Proportional to 58,319.32, 80,439.20 and 38,928.45

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Solution

The fourth proportional to 58,319.32, 80,439.20 and 38,928.45 is: 53,693.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,319.32 : 80,439.20 = 38,928.45 : x
  2. Step 2: Convert to fraction form
    58,319.32/80,439.20 = 38,928.45/x
  3. Step 3: Cross multiply
    58,319.32x = 80,439.20 × 38,928.45
  4. Step 4: Simplify right side
    58,319.32x = 3,131,373,375.24
  5. Step 5: Solve for x
    x = 3,131,373,375.24/58,319.32
  6. Step 6: Final answer
    x = 53,693.59

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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.