Home / 105,559.79-145,667.06-57,803.91

Finding the Fourth Proportional to 105,559.79, 145,667.06 and 57,803.91

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Solution

The fourth proportional to 105,559.79, 145,667.06 and 57,803.91 is: 79,766.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,559.79 : 145,667.06 = 57,803.91 : x
  2. Step 2: Convert to fraction form
    105,559.79/145,667.06 = 57,803.91/x
  3. Step 3: Cross multiply
    105,559.79x = 145,667.06 × 57,803.91
  4. Step 4: Simplify right side
    105,559.79x = 8,420,125,007.70
  5. Step 5: Solve for x
    x = 8,420,125,007.70/105,559.79
  6. Step 6: Final answer
    x = 79,766.41

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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.