Home / 105,615.38-145,749.23-57,870.44

Finding the Fourth Proportional to 105,615.38, 145,749.23 and 57,870.44

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Solution

The fourth proportional to 105,615.38, 145,749.23 and 57,870.44 is: 79,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,615.38 : 145,749.23 = 57,870.44 : x
  2. Step 2: Convert to fraction form
    105,615.38/145,749.23 = 57,870.44/x
  3. Step 3: Cross multiply
    105,615.38x = 145,749.23 × 57,870.44
  4. Step 4: Simplify right side
    105,615.38x = 8,434,571,051.66
  5. Step 5: Solve for x
    x = 8,434,571,051.66/105,615.38
  6. Step 6: Final answer
    x = 79,861.20

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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.