Home / 76,987.10-106,344.20-61,936.45

Finding the Fourth Proportional to 76,987.10, 106,344.20 and 61,936.45

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Solution

The fourth proportional to 76,987.10, 106,344.20 and 61,936.45 is: 85,554.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,987.10 : 106,344.20 = 61,936.45 : x
  2. Step 2: Convert to fraction form
    76,987.10/106,344.20 = 61,936.45/x
  3. Step 3: Cross multiply
    76,987.10x = 106,344.20 × 61,936.45
  4. Step 4: Simplify right side
    76,987.10x = 6,586,582,226.09
  5. Step 5: Solve for x
    x = 6,586,582,226.09/76,987.10
  6. Step 6: Final answer
    x = 85,554.36

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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.