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Finding the Fourth Proportional to 67,193.68, 92,731.12 and 38,518.12

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Solution

The fourth proportional to 67,193.68, 92,731.12 and 38,518.12 is: 53,157.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,193.68 : 92,731.12 = 38,518.12 : x
  2. Step 2: Convert to fraction form
    67,193.68/92,731.12 = 38,518.12/x
  3. Step 3: Cross multiply
    67,193.68x = 92,731.12 × 38,518.12
  4. Step 4: Simplify right side
    67,193.68x = 3,571,828,407.89
  5. Step 5: Solve for x
    x = 3,571,828,407.89/67,193.68
  6. Step 6: Final answer
    x = 53,157.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.