Home / 85,500.56-128,253.02-40,511.36

Finding the Fourth Proportional to 85,500.56, 128,253.02 and 40,511.36

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Solution

The fourth proportional to 85,500.56, 128,253.02 and 40,511.36 is: 60,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,500.56 : 128,253.02 = 40,511.36 : x
  2. Step 2: Convert to fraction form
    85,500.56/128,253.02 = 40,511.36/x
  3. Step 3: Cross multiply
    85,500.56x = 128,253.02 × 40,511.36
  4. Step 4: Simplify right side
    85,500.56x = 5,195,703,420.49
  5. Step 5: Solve for x
    x = 5,195,703,420.49/85,500.56
  6. Step 6: Final answer
    x = 60,768.07

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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.