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Finding the Fourth Proportional to 81,484.68, 112,448.46 and 45,674.68

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Solution

The fourth proportional to 81,484.68, 112,448.46 and 45,674.68 is: 63,030.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,484.68 : 112,448.46 = 45,674.68 : x
  2. Step 2: Convert to fraction form
    81,484.68/112,448.46 = 45,674.68/x
  3. Step 3: Cross multiply
    81,484.68x = 112,448.46 × 45,674.68
  4. Step 4: Simplify right side
    81,484.68x = 5,136,047,426.99
  5. Step 5: Solve for x
    x = 5,136,047,426.99/81,484.68
  6. Step 6: Final answer
    x = 63,030.84

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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.