Home / 87,856.65-121,192.66-55,581.25

Finding the Fourth Proportional to 87,856.65, 121,192.66 and 55,581.25

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Solution

The fourth proportional to 87,856.65, 121,192.66 and 55,581.25 is: 76,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.65 : 121,192.66 = 55,581.25 : x
  2. Step 2: Convert to fraction form
    87,856.65/121,192.66 = 55,581.25/x
  3. Step 3: Cross multiply
    87,856.65x = 121,192.66 × 55,581.25
  4. Step 4: Simplify right side
    87,856.65x = 6,736,039,533.63
  5. Step 5: Solve for x
    x = 6,736,039,533.63/87,856.65
  6. Step 6: Final answer
    x = 76,670.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.