Home / 105,289.92-145,299.75-57,543.26

Finding the Fourth Proportional to 105,289.92, 145,299.75 and 57,543.26

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Solution

The fourth proportional to 105,289.92, 145,299.75 and 57,543.26 is: 79,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,289.92 : 145,299.75 = 57,543.26 : x
  2. Step 2: Convert to fraction form
    105,289.92/145,299.75 = 57,543.26/x
  3. Step 3: Cross multiply
    105,289.92x = 145,299.75 × 57,543.26
  4. Step 4: Simplify right side
    105,289.92x = 8,361,020,565.69
  5. Step 5: Solve for x
    x = 8,361,020,565.69/105,289.92
  6. Step 6: Final answer
    x = 79,409.51

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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.