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Finding the Fourth Proportional to 81,468.94, 112,426.99 and 45,658.94

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Solution

The fourth proportional to 81,468.94, 112,426.99 and 45,658.94 is: 63,009.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468.94 : 112,426.99 = 45,658.94 : x
  2. Step 2: Convert to fraction form
    81,468.94/112,426.99 = 45,658.94/x
  3. Step 3: Cross multiply
    81,468.94x = 112,426.99 × 45,658.94
  4. Step 4: Simplify right side
    81,468.94x = 5,133,297,146.91
  5. Step 5: Solve for x
    x = 5,133,297,146.91/81,468.94
  6. Step 6: Final answer
    x = 63,009.25

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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.