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Finding the Fourth Proportional to 81,642.84, 112,666.67 and 45,832.84

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Solution

The fourth proportional to 81,642.84, 112,666.67 and 45,832.84 is: 63,249.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,642.84 : 112,666.67 = 45,832.84 : x
  2. Step 2: Convert to fraction form
    81,642.84/112,666.67 = 45,832.84/x
  3. Step 3: Cross multiply
    81,642.84x = 112,666.67 × 45,832.84
  4. Step 4: Simplify right side
    81,642.84x = 5,163,833,459.44
  5. Step 5: Solve for x
    x = 5,163,833,459.44/81,642.84
  6. Step 6: Final answer
    x = 63,249.07

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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.