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Finding the Fourth Proportional to 98,269.50, 135,612.28 and 53,557.50

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Solution

The fourth proportional to 98,269.50, 135,612.28 and 53,557.50 is: 73,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,269.50 : 135,612.28 = 53,557.50 : x
  2. Step 2: Convert to fraction form
    98,269.50/135,612.28 = 53,557.50/x
  3. Step 3: Cross multiply
    98,269.50x = 135,612.28 × 53,557.50
  4. Step 4: Simplify right side
    98,269.50x = 7,263,054,686.10
  5. Step 5: Solve for x
    x = 7,263,054,686.10/98,269.50
  6. Step 6: Final answer
    x = 73,909.55

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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.