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Finding the Fourth Proportional to 98,310, 135,667.64 and 55,868.56

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Solution

The fourth proportional to 98,310, 135,667.64 and 55,868.56 is: 77,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,310 : 135,667.64 = 55,868.56 : x
  2. Step 2: Convert to fraction form
    98,310/135,667.64 = 55,868.56/x
  3. Step 3: Cross multiply
    98,310x = 135,667.64 × 55,868.56
  4. Step 4: Simplify right side
    98,310x = 7,579,555,685.40
  5. Step 5: Solve for x
    x = 7,579,555,685.40/98,310
  6. Step 6: Final answer
    x = 77,098.52

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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.