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Finding the Fourth Proportional to 67,304.40, 92,878.80 and 39,012.72

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Solution

The fourth proportional to 67,304.40, 92,878.80 and 39,012.72 is: 53,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,304.40 : 92,878.80 = 39,012.72 : x
  2. Step 2: Convert to fraction form
    67,304.40/92,878.80 = 39,012.72/x
  3. Step 3: Cross multiply
    67,304.40x = 92,878.80 × 39,012.72
  4. Step 4: Simplify right side
    67,304.40x = 3,623,454,618.34
  5. Step 5: Solve for x
    x = 3,623,454,618.34/67,304.40
  6. Step 6: Final answer
    x = 53,836.82

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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.