Home / 76,329.20-105,330.57-42,334.68

Finding the Fourth Proportional to 76,329.20, 105,330.57 and 42,334.68

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Solution

The fourth proportional to 76,329.20, 105,330.57 and 42,334.68 is: 58,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,329.20 : 105,330.57 = 42,334.68 : x
  2. Step 2: Convert to fraction form
    76,329.20/105,330.57 = 42,334.68/x
  3. Step 3: Cross multiply
    76,329.20x = 105,330.57 × 42,334.68
  4. Step 4: Simplify right side
    76,329.20x = 4,459,135,448.51
  5. Step 5: Solve for x
    x = 4,459,135,448.51/76,329.20
  6. Step 6: Final answer
    x = 58,419.78

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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.