Home / 90,749.64-136,124.46-28,425

Finding the Fourth Proportional to 90,749.64, 136,124.46 and 28,425

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Solution

The fourth proportional to 90,749.64, 136,124.46 and 28,425 is: 42,637.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,749.64 : 136,124.46 = 28,425 : x
  2. Step 2: Convert to fraction form
    90,749.64/136,124.46 = 28,425/x
  3. Step 3: Cross multiply
    90,749.64x = 136,124.46 × 28,425
  4. Step 4: Simplify right side
    90,749.64x = 3,869,337,775.50
  5. Step 5: Solve for x
    x = 3,869,337,775.50/90,749.64
  6. Step 6: Final answer
    x = 42,637.50

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Double scale
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Similar ratio
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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.