Home / 105,727.68-145,904.40-57,981.38

Finding the Fourth Proportional to 105,727.68, 145,904.40 and 57,981.38

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Solution

The fourth proportional to 105,727.68, 145,904.40 and 57,981.38 is: 80,014.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,727.68 : 145,904.40 = 57,981.38 : x
  2. Step 2: Convert to fraction form
    105,727.68/145,904.40 = 57,981.38/x
  3. Step 3: Cross multiply
    105,727.68x = 145,904.40 × 57,981.38
  4. Step 4: Simplify right side
    105,727.68x = 8,459,738,460.07
  5. Step 5: Solve for x
    x = 8,459,738,460.07/105,727.68
  6. Step 6: Final answer
    x = 80,014.41

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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.