Home / 90,765.64-136,148.52-28,441

Finding the Fourth Proportional to 90,765.64, 136,148.52 and 28,441

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Solution

The fourth proportional to 90,765.64, 136,148.52 and 28,441 is: 42,661.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,765.64 : 136,148.52 = 28,441 : x
  2. Step 2: Convert to fraction form
    90,765.64/136,148.52 = 28,441/x
  3. Step 3: Cross multiply
    90,765.64x = 136,148.52 × 28,441
  4. Step 4: Simplify right side
    90,765.64x = 3,872,200,057.32
  5. Step 5: Solve for x
    x = 3,872,200,057.32/90,765.64
  6. Step 6: Final answer
    x = 42,661.52

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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.