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Finding the Fourth Proportional to 98,910.89, 136,496.84 and 53,590

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Solution

The fourth proportional to 98,910.89, 136,496.84 and 53,590 is: 73,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,910.89 : 136,496.84 = 53,590 : x
  2. Step 2: Convert to fraction form
    98,910.89/136,496.84 = 53,590/x
  3. Step 3: Cross multiply
    98,910.89x = 136,496.84 × 53,590
  4. Step 4: Simplify right side
    98,910.89x = 7,314,865,655.60
  5. Step 5: Solve for x
    x = 7,314,865,655.60/98,910.89
  6. Step 6: Final answer
    x = 73,954.10

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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.