Home / 42,772.20-64,231.20-28,046.40

Finding the Fourth Proportional to 42,772.20, 64,231.20 and 28,046.40

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Solution

The fourth proportional to 42,772.20, 64,231.20 and 28,046.40 is: 42,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,772.20 : 64,231.20 = 28,046.40 : x
  2. Step 2: Convert to fraction form
    42,772.20/64,231.20 = 28,046.40/x
  3. Step 3: Cross multiply
    42,772.20x = 64,231.20 × 28,046.40
  4. Step 4: Simplify right side
    42,772.20x = 1,801,453,927.68
  5. Step 5: Solve for x
    x = 1,801,453,927.68/42,772.20
  6. Step 6: Final answer
    x = 42,117.40

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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.