Home / 84,018.25-126,027.38-21,688.75

Finding the Fourth Proportional to 84,018.25, 126,027.38 and 21,688.75

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Solution

The fourth proportional to 84,018.25, 126,027.38 and 21,688.75 is: 32,533.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,018.25 : 126,027.38 = 21,688.75 : x
  2. Step 2: Convert to fraction form
    84,018.25/126,027.38 = 21,688.75/x
  3. Step 3: Cross multiply
    84,018.25x = 126,027.38 × 21,688.75
  4. Step 4: Simplify right side
    84,018.25x = 2,733,376,337.98
  5. Step 5: Solve for x
    x = 2,733,376,337.98/84,018.25
  6. Step 6: Final answer
    x = 32,533.13

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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.