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Finding the Fourth Proportional to 98,427.84, 135,840.42 and 58,154.64

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Solution

The fourth proportional to 98,427.84, 135,840.42 and 58,154.64 is: 80,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,427.84 : 135,840.42 = 58,154.64 : x
  2. Step 2: Convert to fraction form
    98,427.84/135,840.42 = 58,154.64/x
  3. Step 3: Cross multiply
    98,427.84x = 135,840.42 × 58,154.64
  4. Step 4: Simplify right side
    98,427.84x = 7,899,750,722.55
  5. Step 5: Solve for x
    x = 7,899,750,722.55/98,427.84
  6. Step 6: Final answer
    x = 80,259.31

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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.