Home / 42,861.92-64,334.44-20,690.88

Finding the Fourth Proportional to 42,861.92, 64,334.44 and 20,690.88

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Solution

The fourth proportional to 42,861.92, 64,334.44 and 20,690.88 is: 31,056.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,861.92 : 64,334.44 = 20,690.88 : x
  2. Step 2: Convert to fraction form
    42,861.92/64,334.44 = 20,690.88/x
  3. Step 3: Cross multiply
    42,861.92x = 64,334.44 × 20,690.88
  4. Step 4: Simplify right side
    42,861.92x = 1,331,136,177.91
  5. Step 5: Solve for x
    x = 1,331,136,177.91/42,861.92
  6. Step 6: Final answer
    x = 31,056.38

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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.