Home / 105,552.81-145,661.63-57,805.47

Finding the Fourth Proportional to 105,552.81, 145,661.63 and 57,805.47

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Solution

The fourth proportional to 105,552.81, 145,661.63 and 57,805.47 is: 79,770.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,552.81 : 145,661.63 = 57,805.47 : x
  2. Step 2: Convert to fraction form
    105,552.81/145,661.63 = 57,805.47/x
  3. Step 3: Cross multiply
    105,552.81x = 145,661.63 × 57,805.47
  4. Step 4: Simplify right side
    105,552.81x = 8,420,038,694.09
  5. Step 5: Solve for x
    x = 8,420,038,694.09/105,552.81
  6. Step 6: Final answer
    x = 79,770.86

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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.