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Finding the Fourth Proportional to 81,017.52, 111,806.52 and 45,206.76

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Solution

The fourth proportional to 81,017.52, 111,806.52 and 45,206.76 is: 62,386.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.52 : 111,806.52 = 45,206.76 : x
  2. Step 2: Convert to fraction form
    81,017.52/111,806.52 = 45,206.76/x
  3. Step 3: Cross multiply
    81,017.52x = 111,806.52 × 45,206.76
  4. Step 4: Simplify right side
    81,017.52x = 5,054,410,516.08
  5. Step 5: Solve for x
    x = 5,054,410,516.08/81,017.52
  6. Step 6: Final answer
    x = 62,386.64

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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.