Home / 65,195.08-89,971.35-38,340.07

Finding the Fourth Proportional to 65,195.08, 89,971.35 and 38,340.07

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Solution

The fourth proportional to 65,195.08, 89,971.35 and 38,340.07 is: 52,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,195.08 : 89,971.35 = 38,340.07 : x
  2. Step 2: Convert to fraction form
    65,195.08/89,971.35 = 38,340.07/x
  3. Step 3: Cross multiply
    65,195.08x = 89,971.35 × 38,340.07
  4. Step 4: Simplify right side
    65,195.08x = 3,449,507,856.99
  5. Step 5: Solve for x
    x = 3,449,507,856.99/65,195.08
  6. Step 6: Final answer
    x = 52,910.55

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1.5x scale

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.