Home / 85,562.85-128,219.47-48,133.36

Finding the Fourth Proportional to 85,562.85, 128,219.47 and 48,133.36

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Solution

The fourth proportional to 85,562.85, 128,219.47 and 48,133.36 is: 72,129.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,562.85 : 128,219.47 = 48,133.36 : x
  2. Step 2: Convert to fraction form
    85,562.85/128,219.47 = 48,133.36/x
  3. Step 3: Cross multiply
    85,562.85x = 128,219.47 × 48,133.36
  4. Step 4: Simplify right side
    85,562.85x = 6,171,633,467.64
  5. Step 5: Solve for x
    x = 6,171,633,467.64/85,562.85
  6. Step 6: Final answer
    x = 72,129.83

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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.