Home / 42,769.76-64,143.63-20,258.24

Finding the Fourth Proportional to 42,769.76, 64,143.63 and 20,258.24

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Solution

The fourth proportional to 42,769.76, 64,143.63 and 20,258.24 is: 30,382.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,769.76 : 64,143.63 = 20,258.24 : x
  2. Step 2: Convert to fraction form
    42,769.76/64,143.63 = 20,258.24/x
  3. Step 3: Cross multiply
    42,769.76x = 64,143.63 × 20,258.24
  4. Step 4: Simplify right side
    42,769.76x = 1,299,436,730.29
  5. Step 5: Solve for x
    x = 1,299,436,730.29/42,769.76
  6. Step 6: Final answer
    x = 30,382.14

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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.