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Finding the Fourth Proportional to 67,390.68, 92,996.88 and 38,709.48

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Solution

The fourth proportional to 67,390.68, 92,996.88 and 38,709.48 is: 53,417.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.68 : 92,996.88 = 38,709.48 : x
  2. Step 2: Convert to fraction form
    67,390.68/92,996.88 = 38,709.48/x
  3. Step 3: Cross multiply
    67,390.68x = 92,996.88 × 38,709.48
  4. Step 4: Simplify right side
    67,390.68x = 3,599,860,866.42
  5. Step 5: Solve for x
    x = 3,599,860,866.42/67,390.68
  6. Step 6: Final answer
    x = 53,417.79

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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.