Home / 90,841.53-136,284.11-28,512.03

Finding the Fourth Proportional to 90,841.53, 136,284.11 and 28,512.03

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Solution

The fourth proportional to 90,841.53, 136,284.11 and 28,512.03 is: 42,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,841.53 : 136,284.11 = 28,512.03 : x
  2. Step 2: Convert to fraction form
    90,841.53/136,284.11 = 28,512.03/x
  3. Step 3: Cross multiply
    90,841.53x = 136,284.11 × 28,512.03
  4. Step 4: Simplify right side
    90,841.53x = 3,885,736,490.28
  5. Step 5: Solve for x
    x = 3,885,736,490.28/90,841.53
  6. Step 6: Final answer
    x = 42,774.89

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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.