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Finding the Fourth Proportional to 98,322.34, 135,684.99 and 55,880.88

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Solution

The fourth proportional to 98,322.34, 135,684.99 and 55,880.88 is: 77,115.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,322.34 : 135,684.99 = 55,880.88 : x
  2. Step 2: Convert to fraction form
    98,322.34/135,684.99 = 55,880.88/x
  3. Step 3: Cross multiply
    98,322.34x = 135,684.99 × 55,880.88
  4. Step 4: Simplify right side
    98,322.34x = 7,582,196,643.99
  5. Step 5: Solve for x
    x = 7,582,196,643.99/98,322.34
  6. Step 6: Final answer
    x = 77,115.71

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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.