Home / 81,723.73-112,781.65-45,913.02

Finding the Fourth Proportional to 81,723.73, 112,781.65 and 45,913.02

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Solution

The fourth proportional to 81,723.73, 112,781.65 and 45,913.02 is: 63,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.73 : 112,781.65 = 45,913.02 : x
  2. Step 2: Convert to fraction form
    81,723.73/112,781.65 = 45,913.02/x
  3. Step 3: Cross multiply
    81,723.73x = 112,781.65 × 45,913.02
  4. Step 4: Simplify right side
    81,723.73x = 5,178,146,152.08
  5. Step 5: Solve for x
    x = 5,178,146,152.08/81,723.73
  6. Step 6: Final answer
    x = 63,361.60

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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.