Home / 78,329.79-108,095.25-42,519.80

Finding the Fourth Proportional to 78,329.79, 108,095.25 and 42,519.80

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Solution

The fourth proportional to 78,329.79, 108,095.25 and 42,519.80 is: 58,677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,329.79 : 108,095.25 = 42,519.80 : x
  2. Step 2: Convert to fraction form
    78,329.79/108,095.25 = 42,519.80/x
  3. Step 3: Cross multiply
    78,329.79x = 108,095.25 × 42,519.80
  4. Step 4: Simplify right side
    78,329.79x = 4,596,187,870.47
  5. Step 5: Solve for x
    x = 4,596,187,870.47/78,329.79
  6. Step 6: Final answer
    x = 58,677.39

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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.