Home / 98,416.22-135,832.94-61,639.50

Finding the Fourth Proportional to 98,416.22, 135,832.94 and 61,639.50

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Solution

The fourth proportional to 98,416.22, 135,832.94 and 61,639.50 is: 85,074.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,416.22 : 135,832.94 = 61,639.50 : x
  2. Step 2: Convert to fraction form
    98,416.22/135,832.94 = 61,639.50/x
  3. Step 3: Cross multiply
    98,416.22x = 135,832.94 × 61,639.50
  4. Step 4: Simplify right side
    98,416.22x = 8,372,674,505.13
  5. Step 5: Solve for x
    x = 8,372,674,505.13/98,416.22
  6. Step 6: Final answer
    x = 85,074.13

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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.