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Finding the Fourth Proportional to 67,267.31, 92,828.90 and 38,989.40

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Solution

The fourth proportional to 67,267.31, 92,828.90 and 38,989.40 is: 53,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,267.31 : 92,828.90 = 38,989.40 : x
  2. Step 2: Convert to fraction form
    67,267.31/92,828.90 = 38,989.40/x
  3. Step 3: Cross multiply
    67,267.31x = 92,828.90 × 38,989.40
  4. Step 4: Simplify right side
    67,267.31x = 3,619,343,150.79
  5. Step 5: Solve for x
    x = 3,619,343,150.79/67,267.31
  6. Step 6: Final answer
    x = 53,805.38

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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.