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Finding the Fourth Proportional to 73,880.72, 101,728.68 and 67,936.40

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Solution

The fourth proportional to 73,880.72, 101,728.68 and 67,936.40 is: 93,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,880.72 : 101,728.68 = 67,936.40 : x
  2. Step 2: Convert to fraction form
    73,880.72/101,728.68 = 67,936.40/x
  3. Step 3: Cross multiply
    73,880.72x = 101,728.68 × 67,936.40
  4. Step 4: Simplify right side
    73,880.72x = 6,911,080,295.95
  5. Step 5: Solve for x
    x = 6,911,080,295.95/73,880.72
  6. Step 6: Final answer
    x = 93,543.76

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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.