Home / 39,840.61-54,861.36-38,956.53

Finding the Fourth Proportional to 39,840.61, 54,861.36 and 38,956.53

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Solution

The fourth proportional to 39,840.61, 54,861.36 and 38,956.53 is: 53,643.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,840.61 : 54,861.36 = 38,956.53 : x
  2. Step 2: Convert to fraction form
    39,840.61/54,861.36 = 38,956.53/x
  3. Step 3: Cross multiply
    39,840.61x = 54,861.36 × 38,956.53
  4. Step 4: Simplify right side
    39,840.61x = 2,137,208,216.68
  5. Step 5: Solve for x
    x = 2,137,208,216.68/39,840.61
  6. Step 6: Final answer
    x = 53,643.96

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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.