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Finding the Fourth Proportional to 67,890.60, 101,835.90 and 36,397.80

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Solution

The fourth proportional to 67,890.60, 101,835.90 and 36,397.80 is: 54,596.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,890.60 : 101,835.90 = 36,397.80 : x
  2. Step 2: Convert to fraction form
    67,890.60/101,835.90 = 36,397.80/x
  3. Step 3: Cross multiply
    67,890.60x = 101,835.90 × 36,397.80
  4. Step 4: Simplify right side
    67,890.60x = 3,706,602,721.02
  5. Step 5: Solve for x
    x = 3,706,602,721.02/67,890.60
  6. Step 6: Final answer
    x = 54,596.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.