Home / 105,709.86-145,879.18-57,966.23

Finding the Fourth Proportional to 105,709.86, 145,879.18 and 57,966.23

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Solution

The fourth proportional to 105,709.86, 145,879.18 and 57,966.23 is: 79,993.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,709.86 : 145,879.18 = 57,966.23 : x
  2. Step 2: Convert to fraction form
    105,709.86/145,879.18 = 57,966.23/x
  3. Step 3: Cross multiply
    105,709.86x = 145,879.18 × 57,966.23
  4. Step 4: Simplify right side
    105,709.86x = 8,456,066,319.87
  5. Step 5: Solve for x
    x = 8,456,066,319.87/105,709.86
  6. Step 6: Final answer
    x = 79,993.17

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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.