Home / 90,658.32-135,987.46-28,328.82

Finding the Fourth Proportional to 90,658.32, 135,987.46 and 28,328.82

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Solution

The fourth proportional to 90,658.32, 135,987.46 and 28,328.82 is: 42,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,658.32 : 135,987.46 = 28,328.82 : x
  2. Step 2: Convert to fraction form
    90,658.32/135,987.46 = 28,328.82/x
  3. Step 3: Cross multiply
    90,658.32x = 135,987.46 × 28,328.82
  4. Step 4: Simplify right side
    90,658.32x = 3,852,364,460.75
  5. Step 5: Solve for x
    x = 3,852,364,460.75/90,658.32
  6. Step 6: Final answer
    x = 42,493.22

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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.