Home / 65,628.72-90,539.19-40,136.22

Finding the Fourth Proportional to 65,628.72, 90,539.19 and 40,136.22

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Solution

The fourth proportional to 65,628.72, 90,539.19 and 40,136.22 is: 55,370.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,628.72 : 90,539.19 = 40,136.22 : x
  2. Step 2: Convert to fraction form
    65,628.72/90,539.19 = 40,136.22/x
  3. Step 3: Cross multiply
    65,628.72x = 90,539.19 × 40,136.22
  4. Step 4: Simplify right side
    65,628.72x = 3,633,900,848.46
  5. Step 5: Solve for x
    x = 3,633,900,848.46/65,628.72
  6. Step 6: Final answer
    x = 55,370.59

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1.5x scale

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.