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Finding the Fourth Proportional to 73,688.76, 110,517.48 and 21,084.12

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Solution

The fourth proportional to 73,688.76, 110,517.48 and 21,084.12 is: 31,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,688.76 : 110,517.48 = 21,084.12 : x
  2. Step 2: Convert to fraction form
    73,688.76/110,517.48 = 21,084.12/x
  3. Step 3: Cross multiply
    73,688.76x = 110,517.48 × 21,084.12
  4. Step 4: Simplify right side
    73,688.76x = 2,330,163,810.42
  5. Step 5: Solve for x
    x = 2,330,163,810.42/73,688.76
  6. Step 6: Final answer
    x = 31,621.70

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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.