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Finding the Fourth Proportional to 81,758.80, 112,798.20 and 53,462.80

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Solution

The fourth proportional to 81,758.80, 112,798.20 and 53,462.80 is: 73,759.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,758.80 : 112,798.20 = 53,462.80 : x
  2. Step 2: Convert to fraction form
    81,758.80/112,798.20 = 53,462.80/x
  3. Step 3: Cross multiply
    81,758.80x = 112,798.20 × 53,462.80
  4. Step 4: Simplify right side
    81,758.80x = 6,030,507,606.96
  5. Step 5: Solve for x
    x = 6,030,507,606.96/81,758.80
  6. Step 6: Final answer
    x = 73,759.74

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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.