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Finding the Fourth Proportional to 70,911.30, 97,857.59 and 39,080.19

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Solution

The fourth proportional to 70,911.30, 97,857.59 and 39,080.19 is: 53,930.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.30 : 97,857.59 = 39,080.19 : x
  2. Step 2: Convert to fraction form
    70,911.30/97,857.59 = 39,080.19/x
  3. Step 3: Cross multiply
    70,911.30x = 97,857.59 × 39,080.19
  4. Step 4: Simplify right side
    70,911.30x = 3,824,293,014.74
  5. Step 5: Solve for x
    x = 3,824,293,014.74/70,911.30
  6. Step 6: Final answer
    x = 53,930.66

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1.5x scale

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.