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Finding the Fourth Proportional to 81,262.64, 112,166.28 and 47,279.12

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Solution

The fourth proportional to 81,262.64, 112,166.28 and 47,279.12 is: 65,259.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262.64 : 112,166.28 = 47,279.12 : x
  2. Step 2: Convert to fraction form
    81,262.64/112,166.28 = 47,279.12/x
  3. Step 3: Cross multiply
    81,262.64x = 112,166.28 × 47,279.12
  4. Step 4: Simplify right side
    81,262.64x = 5,303,123,012.07
  5. Step 5: Solve for x
    x = 5,303,123,012.07/81,262.64
  6. Step 6: Final answer
    x = 65,259.05

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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.