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Finding the Fourth Proportional to 70,880.97, 97,812.72 and 40,645.29

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Solution

The fourth proportional to 70,880.97, 97,812.72 and 40,645.29 is: 56,088.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.97 : 97,812.72 = 40,645.29 : x
  2. Step 2: Convert to fraction form
    70,880.97/97,812.72 = 40,645.29/x
  3. Step 3: Cross multiply
    70,880.97x = 97,812.72 × 40,645.29
  4. Step 4: Simplify right side
    70,880.97x = 3,975,626,370.09
  5. Step 5: Solve for x
    x = 3,975,626,370.09/70,880.97
  6. Step 6: Final answer
    x = 56,088.77

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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.