Home / 79,686.12-109,962.75-43,869.24

Finding the Fourth Proportional to 79,686.12, 109,962.75 and 43,869.24

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Solution

The fourth proportional to 79,686.12, 109,962.75 and 43,869.24 is: 60,537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,686.12 : 109,962.75 = 43,869.24 : x
  2. Step 2: Convert to fraction form
    79,686.12/109,962.75 = 43,869.24/x
  3. Step 3: Cross multiply
    79,686.12x = 109,962.75 × 43,869.24
  4. Step 4: Simplify right side
    79,686.12x = 4,823,982,270.81
  5. Step 5: Solve for x
    x = 4,823,982,270.81/79,686.12
  6. Step 6: Final answer
    x = 60,537.30

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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.