Home / 71,802.13-99,085.19-39,970.35

Finding the Fourth Proportional to 71,802.13, 99,085.19 and 39,970.35

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Solution

The fourth proportional to 71,802.13, 99,085.19 and 39,970.35 is: 55,158.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,802.13 : 99,085.19 = 39,970.35 : x
  2. Step 2: Convert to fraction form
    71,802.13/99,085.19 = 39,970.35/x
  3. Step 3: Cross multiply
    71,802.13x = 99,085.19 × 39,970.35
  4. Step 4: Simplify right side
    71,802.13x = 3,960,469,724.12
  5. Step 5: Solve for x
    x = 3,960,469,724.12/71,802.13
  6. Step 6: Final answer
    x = 55,158.11

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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.