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Finding the Fourth Proportional to 105,355.33, 145,390.35 and 57,608.71

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Solution

The fourth proportional to 105,355.33, 145,390.35 and 57,608.71 is: 79,500.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,355.33 : 145,390.35 = 57,608.71 : x
  2. Step 2: Convert to fraction form
    105,355.33/145,390.35 = 57,608.71/x
  3. Step 3: Cross multiply
    105,355.33x = 145,390.35 × 57,608.71
  4. Step 4: Simplify right side
    105,355.33x = 8,375,750,509.95
  5. Step 5: Solve for x
    x = 8,375,750,509.95/105,355.33
  6. Step 6: Final answer
    x = 79,500.02

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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.