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Finding the Fourth Proportional to 81,339.68, 112,249.68 and 45,533.12

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Solution

The fourth proportional to 81,339.68, 112,249.68 and 45,533.12 is: 62,836.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.68 : 112,249.68 = 45,533.12 : x
  2. Step 2: Convert to fraction form
    81,339.68/112,249.68 = 45,533.12/x
  3. Step 3: Cross multiply
    81,339.68x = 112,249.68 × 45,533.12
  4. Step 4: Simplify right side
    81,339.68x = 5,111,078,149.40
  5. Step 5: Solve for x
    x = 5,111,078,149.40/81,339.68
  6. Step 6: Final answer
    x = 62,836.22

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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.