Home / 67,639.68-93,321.60-40,790.40

Finding the Fourth Proportional to 67,639.68, 93,321.60 and 40,790.40

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Solution

The fourth proportional to 67,639.68, 93,321.60 and 40,790.40 is: 56,277.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,639.68 : 93,321.60 = 40,790.40 : x
  2. Step 2: Convert to fraction form
    67,639.68/93,321.60 = 40,790.40/x
  3. Step 3: Cross multiply
    67,639.68x = 93,321.60 × 40,790.40
  4. Step 4: Simplify right side
    67,639.68x = 3,806,625,392.64
  5. Step 5: Solve for x
    x = 3,806,625,392.64/67,639.68
  6. Step 6: Final answer
    x = 56,277.99

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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.