Home / 76,328.20-105,329.19-42,333.68

Finding the Fourth Proportional to 76,328.20, 105,329.19 and 42,333.68

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Solution

The fourth proportional to 76,328.20, 105,329.19 and 42,333.68 is: 58,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,328.20 : 105,329.19 = 42,333.68 : x
  2. Step 2: Convert to fraction form
    76,328.20/105,329.19 = 42,333.68/x
  3. Step 3: Cross multiply
    76,328.20x = 105,329.19 × 42,333.68
  4. Step 4: Simplify right side
    76,328.20x = 4,458,971,697.47
  5. Step 5: Solve for x
    x = 4,458,971,697.47/76,328.20
  6. Step 6: Final answer
    x = 58,418.41

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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.