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Finding the Fourth Proportional to 98,465.59, 135,867.76 and 55,438.84

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Solution

The fourth proportional to 98,465.59, 135,867.76 and 55,438.84 is: 76,497.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,465.59 : 135,867.76 = 55,438.84 : x
  2. Step 2: Convert to fraction form
    98,465.59/135,867.76 = 55,438.84/x
  3. Step 3: Cross multiply
    98,465.59x = 135,867.76 × 55,438.84
  4. Step 4: Simplify right side
    98,465.59x = 7,532,351,007.80
  5. Step 5: Solve for x
    x = 7,532,351,007.80/98,465.59
  6. Step 6: Final answer
    x = 76,497.29

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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.