Home / 85,724.22-128,463.77-48,205.53

Finding the Fourth Proportional to 85,724.22, 128,463.77 and 48,205.53

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Solution

The fourth proportional to 85,724.22, 128,463.77 and 48,205.53 is: 72,239.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.22 : 128,463.77 = 48,205.53 : x
  2. Step 2: Convert to fraction form
    85,724.22/128,463.77 = 48,205.53/x
  3. Step 3: Cross multiply
    85,724.22x = 128,463.77 × 48,205.53
  4. Step 4: Simplify right side
    85,724.22x = 6,192,664,239.16
  5. Step 5: Solve for x
    x = 6,192,664,239.16/85,724.22
  6. Step 6: Final answer
    x = 72,239.37

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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.