Home / 105,416.18-145,473.81-57,668.66

Finding the Fourth Proportional to 105,416.18, 145,473.81 and 57,668.66

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Solution

The fourth proportional to 105,416.18, 145,473.81 and 57,668.66 is: 79,582.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,416.18 : 145,473.81 = 57,668.66 : x
  2. Step 2: Convert to fraction form
    105,416.18/145,473.81 = 57,668.66/x
  3. Step 3: Cross multiply
    105,416.18x = 145,473.81 × 57,668.66
  4. Step 4: Simplify right side
    105,416.18x = 8,389,279,687.79
  5. Step 5: Solve for x
    x = 8,389,279,687.79/105,416.18
  6. Step 6: Final answer
    x = 79,582.47

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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.