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Finding the Fourth Proportional to 98,220.50, 135,544.29 and 53,508.50

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Solution

The fourth proportional to 98,220.50, 135,544.29 and 53,508.50 is: 73,841.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,220.50 : 135,544.29 = 53,508.50 : x
  2. Step 2: Convert to fraction form
    98,220.50/135,544.29 = 53,508.50/x
  3. Step 3: Cross multiply
    98,220.50x = 135,544.29 × 53,508.50
  4. Step 4: Simplify right side
    98,220.50x = 7,252,771,641.47
  5. Step 5: Solve for x
    x = 7,252,771,641.47/98,220.50
  6. Step 6: Final answer
    x = 73,841.73

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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.