Home / 105,484.28-145,569.15-57,738.02

Finding the Fourth Proportional to 105,484.28, 145,569.15 and 57,738.02

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Solution

The fourth proportional to 105,484.28, 145,569.15 and 57,738.02 is: 79,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,484.28 : 145,569.15 = 57,738.02 : x
  2. Step 2: Convert to fraction form
    105,484.28/145,569.15 = 57,738.02/x
  3. Step 3: Cross multiply
    105,484.28x = 145,569.15 × 57,738.02
  4. Step 4: Simplify right side
    105,484.28x = 8,404,873,766.24
  5. Step 5: Solve for x
    x = 8,404,873,766.24/105,484.28
  6. Step 6: Final answer
    x = 79,678.93

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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.