Home / 71,615.86-98,834.21-39,784.68

Finding the Fourth Proportional to 71,615.86, 98,834.21 and 39,784.68

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Solution

The fourth proportional to 71,615.86, 98,834.21 and 39,784.68 is: 54,905.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,615.86 : 98,834.21 = 39,784.68 : x
  2. Step 2: Convert to fraction form
    71,615.86/98,834.21 = 39,784.68/x
  3. Step 3: Cross multiply
    71,615.86x = 98,834.21 × 39,784.68
  4. Step 4: Simplify right side
    71,615.86x = 3,932,087,368.17
  5. Step 5: Solve for x
    x = 3,932,087,368.17/71,615.86
  6. Step 6: Final answer
    x = 54,905.26

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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.