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Finding the Fourth Proportional to 98,407.84, 135,798.90 and 58,134.55

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Solution

The fourth proportional to 98,407.84, 135,798.90 and 58,134.55 is: 80,223.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,407.84 : 135,798.90 = 58,134.55 : x
  2. Step 2: Convert to fraction form
    98,407.84/135,798.90 = 58,134.55/x
  3. Step 3: Cross multiply
    98,407.84x = 135,798.90 × 58,134.55
  4. Step 4: Simplify right side
    98,407.84x = 7,894,607,942.00
  5. Step 5: Solve for x
    x = 7,894,607,942.00/98,407.84
  6. Step 6: Final answer
    x = 80,223.36

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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.