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Finding the Fourth Proportional to 67,702.40, 93,417 and 39,016.88

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Solution

The fourth proportional to 67,702.40, 93,417 and 39,016.88 is: 53,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,702.40 : 93,417 = 39,016.88 : x
  2. Step 2: Convert to fraction form
    67,702.40/93,417 = 39,016.88/x
  3. Step 3: Cross multiply
    67,702.40x = 93,417 × 39,016.88
  4. Step 4: Simplify right side
    67,702.40x = 3,644,839,878.96
  5. Step 5: Solve for x
    x = 3,644,839,878.96/67,702.40
  6. Step 6: Final answer
    x = 53,836.20

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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.