Home / 67,390.86-92,969.28-39,080.12

Finding the Fourth Proportional to 67,390.86, 92,969.28 and 39,080.12

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Solution

The fourth proportional to 67,390.86, 92,969.28 and 39,080.12 is: 53,913.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.86 : 92,969.28 = 39,080.12 : x
  2. Step 2: Convert to fraction form
    67,390.86/92,969.28 = 39,080.12/x
  3. Step 3: Cross multiply
    67,390.86x = 92,969.28 × 39,080.12
  4. Step 4: Simplify right side
    67,390.86x = 3,633,250,618.71
  5. Step 5: Solve for x
    x = 3,633,250,618.71/67,390.86
  6. Step 6: Final answer
    x = 53,913.11

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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.