Home / 70,939.11-97,896.63-39,109.15

Finding the Fourth Proportional to 70,939.11, 97,896.63 and 39,109.15

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Solution

The fourth proportional to 70,939.11, 97,896.63 and 39,109.15 is: 53,970.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.11 : 97,896.63 = 39,109.15 : x
  2. Step 2: Convert to fraction form
    70,939.11/97,896.63 = 39,109.15/x
  3. Step 3: Cross multiply
    70,939.11x = 97,896.63 × 39,109.15
  4. Step 4: Simplify right side
    70,939.11x = 3,828,654,256.19
  5. Step 5: Solve for x
    x = 3,828,654,256.19/70,939.11
  6. Step 6: Final answer
    x = 53,970.99

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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.