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Finding the Fourth Proportional to 67,021.47, 92,433.08 and 47,865.78

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Solution

The fourth proportional to 67,021.47, 92,433.08 and 47,865.78 is: 66,014.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,021.47 : 92,433.08 = 47,865.78 : x
  2. Step 2: Convert to fraction form
    67,021.47/92,433.08 = 47,865.78/x
  3. Step 3: Cross multiply
    67,021.47x = 92,433.08 × 47,865.78
  4. Step 4: Simplify right side
    67,021.47x = 4,424,381,591.67
  5. Step 5: Solve for x
    x = 4,424,381,591.67/67,021.47
  6. Step 6: Final answer
    x = 66,014.39

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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.