Home / 42,753.34-64,131.11-20,258.74

Finding the Fourth Proportional to 42,753.34, 64,131.11 and 20,258.74

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Solution

The fourth proportional to 42,753.34, 64,131.11 and 20,258.74 is: 30,388.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,753.34 : 64,131.11 = 20,258.74 : x
  2. Step 2: Convert to fraction form
    42,753.34/64,131.11 = 20,258.74/x
  3. Step 3: Cross multiply
    42,753.34x = 64,131.11 × 20,258.74
  4. Step 4: Simplify right side
    42,753.34x = 1,299,215,483.40
  5. Step 5: Solve for x
    x = 1,299,215,483.40/42,753.34
  6. Step 6: Final answer
    x = 30,388.63

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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.