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Finding the Fourth Proportional to 98,747.80, 136,271.88 and 53,425.80

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Solution

The fourth proportional to 98,747.80, 136,271.88 and 53,425.80 is: 73,727.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,747.80 : 136,271.88 = 53,425.80 : x
  2. Step 2: Convert to fraction form
    98,747.80/136,271.88 = 53,425.80/x
  3. Step 3: Cross multiply
    98,747.80x = 136,271.88 × 53,425.80
  4. Step 4: Simplify right side
    98,747.80x = 7,280,434,206.50
  5. Step 5: Solve for x
    x = 7,280,434,206.50/98,747.80
  6. Step 6: Final answer
    x = 73,727.56

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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.