Home / 85,968.20-128,952.30-26,803.40

Finding the Fourth Proportional to 85,968.20, 128,952.30 and 26,803.40

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Solution

The fourth proportional to 85,968.20, 128,952.30 and 26,803.40 is: 40,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968.20 : 128,952.30 = 26,803.40 : x
  2. Step 2: Convert to fraction form
    85,968.20/128,952.30 = 26,803.40/x
  3. Step 3: Cross multiply
    85,968.20x = 128,952.30 × 26,803.40
  4. Step 4: Simplify right side
    85,968.20x = 3,456,360,077.82
  5. Step 5: Solve for x
    x = 3,456,360,077.82/85,968.20
  6. Step 6: Final answer
    x = 40,205.10

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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.