Home / 79,214.31-109,315.75-43,405.68

Finding the Fourth Proportional to 79,214.31, 109,315.75 and 43,405.68

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Solution

The fourth proportional to 79,214.31, 109,315.75 and 43,405.68 is: 59,899.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,214.31 : 109,315.75 = 43,405.68 : x
  2. Step 2: Convert to fraction form
    79,214.31/109,315.75 = 43,405.68/x
  3. Step 3: Cross multiply
    79,214.31x = 109,315.75 × 43,405.68
  4. Step 4: Simplify right side
    79,214.31x = 4,744,924,463.46
  5. Step 5: Solve for x
    x = 4,744,924,463.46/79,214.31
  6. Step 6: Final answer
    x = 59,899.84

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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.