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Finding the Fourth Proportional to 81,801.93, 112,885.43 and 45,991.99

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Solution

The fourth proportional to 81,801.93, 112,885.43 and 45,991.99 is: 63,468.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,801.93 : 112,885.43 = 45,991.99 : x
  2. Step 2: Convert to fraction form
    81,801.93/112,885.43 = 45,991.99/x
  3. Step 3: Cross multiply
    81,801.93x = 112,885.43 × 45,991.99
  4. Step 4: Simplify right side
    81,801.93x = 5,191,825,567.71
  5. Step 5: Solve for x
    x = 5,191,825,567.71/81,801.93
  6. Step 6: Final answer
    x = 63,468.25

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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.