Home / 73,140.20-109,710.30-61,330.40

Finding the Fourth Proportional to 73,140.20, 109,710.30 and 61,330.40

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Solution

The fourth proportional to 73,140.20, 109,710.30 and 61,330.40 is: 91,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,140.20 : 109,710.30 = 61,330.40 : x
  2. Step 2: Convert to fraction form
    73,140.20/109,710.30 = 61,330.40/x
  3. Step 3: Cross multiply
    73,140.20x = 109,710.30 × 61,330.40
  4. Step 4: Simplify right side
    73,140.20x = 6,728,576,583.12
  5. Step 5: Solve for x
    x = 6,728,576,583.12/73,140.20
  6. Step 6: Final answer
    x = 91,995.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.