Home / 78,329.61-108,095.99-42,519.69

Finding the Fourth Proportional to 78,329.61, 108,095.99 and 42,519.69

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Solution

The fourth proportional to 78,329.61, 108,095.99 and 42,519.69 is: 58,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,329.61 : 108,095.99 = 42,519.69 : x
  2. Step 2: Convert to fraction form
    78,329.61/108,095.99 = 42,519.69/x
  3. Step 3: Cross multiply
    78,329.61x = 108,095.99 × 42,519.69
  4. Step 4: Simplify right side
    78,329.61x = 4,596,207,772.44
  5. Step 5: Solve for x
    x = 4,596,207,772.44/78,329.61
  6. Step 6: Final answer
    x = 58,677.78

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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.