Home / 81,449.39-122,098.90-56,501.21

Finding the Fourth Proportional to 81,449.39, 122,098.90 and 56,501.21

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Solution

The fourth proportional to 81,449.39, 122,098.90 and 56,501.21 is: 84,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.39 : 122,098.90 = 56,501.21 : x
  2. Step 2: Convert to fraction form
    81,449.39/122,098.90 = 56,501.21/x
  3. Step 3: Cross multiply
    81,449.39x = 122,098.90 × 56,501.21
  4. Step 4: Simplify right side
    81,449.39x = 6,898,735,589.67
  5. Step 5: Solve for x
    x = 6,898,735,589.67/81,449.39
  6. Step 6: Final answer
    x = 84,699.66

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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.