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Finding the Fourth Proportional to 71,604, 98,839.98 and 61,491.69

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Solution

The fourth proportional to 71,604, 98,839.98 and 61,491.69 is: 84,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,604 : 98,839.98 = 61,491.69 : x
  2. Step 2: Convert to fraction form
    71,604/98,839.98 = 61,491.69/x
  3. Step 3: Cross multiply
    71,604x = 98,839.98 × 61,491.69
  4. Step 4: Simplify right side
    71,604x = 6,077,837,409.77
  5. Step 5: Solve for x
    x = 6,077,837,409.77/71,604
  6. Step 6: Final answer
    x = 84,881.26

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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.