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Finding the Fourth Proportional to 70,935.64, 97,891.84 and 39,105.68

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Solution

The fourth proportional to 70,935.64, 97,891.84 and 39,105.68 is: 53,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,935.64 : 97,891.84 = 39,105.68 : x
  2. Step 2: Convert to fraction form
    70,935.64/97,891.84 = 39,105.68/x
  3. Step 3: Cross multiply
    70,935.64x = 97,891.84 × 39,105.68
  4. Step 4: Simplify right side
    70,935.64x = 3,828,126,969.65
  5. Step 5: Solve for x
    x = 3,828,126,969.65/70,935.64
  6. Step 6: Final answer
    x = 53,966.20

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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.