Home / 105,518.18-145,615.08-57,771.52

Finding the Fourth Proportional to 105,518.18, 145,615.08 and 57,771.52

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Solution

The fourth proportional to 105,518.18, 145,615.08 and 57,771.52 is: 79,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,518.18 : 145,615.08 = 57,771.52 : x
  2. Step 2: Convert to fraction form
    105,518.18/145,615.08 = 57,771.52/x
  3. Step 3: Cross multiply
    105,518.18x = 145,615.08 × 57,771.52
  4. Step 4: Simplify right side
    105,518.18x = 8,412,404,506.52
  5. Step 5: Solve for x
    x = 8,412,404,506.52/105,518.18
  6. Step 6: Final answer
    x = 79,724.69

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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.