Home / 42,749.20-64,124.91-20,254.62

Finding the Fourth Proportional to 42,749.20, 64,124.91 and 20,254.62

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Solution

The fourth proportional to 42,749.20, 64,124.91 and 20,254.62 is: 30,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,749.20 : 64,124.91 = 20,254.62 : x
  2. Step 2: Convert to fraction form
    42,749.20/64,124.91 = 20,254.62/x
  3. Step 3: Cross multiply
    42,749.20x = 64,124.91 × 20,254.62
  4. Step 4: Simplify right side
    42,749.20x = 1,298,825,684.58
  5. Step 5: Solve for x
    x = 1,298,825,684.58/42,749.20
  6. Step 6: Final answer
    x = 30,382.46

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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.