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Finding the Fourth Proportional to 67,639.95, 101,476.44 and 47,688.39

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Solution

The fourth proportional to 67,639.95, 101,476.44 and 47,688.39 is: 71,544.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,639.95 : 101,476.44 = 47,688.39 : x
  2. Step 2: Convert to fraction form
    67,639.95/101,476.44 = 47,688.39/x
  3. Step 3: Cross multiply
    67,639.95x = 101,476.44 × 47,688.39
  4. Step 4: Simplify right side
    67,639.95x = 4,839,248,046.53
  5. Step 5: Solve for x
    x = 4,839,248,046.53/67,639.95
  6. Step 6: Final answer
    x = 71,544.23

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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.