Home / 71,641.48-98,867.64-39,811.72

Finding the Fourth Proportional to 71,641.48, 98,867.64 and 39,811.72

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Solution

The fourth proportional to 71,641.48, 98,867.64 and 39,811.72 is: 54,941.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,641.48 : 98,867.64 = 39,811.72 : x
  2. Step 2: Convert to fraction form
    71,641.48/98,867.64 = 39,811.72/x
  3. Step 3: Cross multiply
    71,641.48x = 98,867.64 × 39,811.72
  4. Step 4: Simplify right side
    71,641.48x = 3,936,090,800.74
  5. Step 5: Solve for x
    x = 3,936,090,800.74/71,641.48
  6. Step 6: Final answer
    x = 54,941.51

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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.