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Finding the Fourth Proportional to 70,858.40, 97,785.24 and 39,028.16

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Solution

The fourth proportional to 70,858.40, 97,785.24 and 39,028.16 is: 53,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,858.40 : 97,785.24 = 39,028.16 : x
  2. Step 2: Convert to fraction form
    70,858.40/97,785.24 = 39,028.16/x
  3. Step 3: Cross multiply
    70,858.40x = 97,785.24 × 39,028.16
  4. Step 4: Simplify right side
    70,858.40x = 3,816,377,992.36
  5. Step 5: Solve for x
    x = 3,816,377,992.36/70,858.40
  6. Step 6: Final answer
    x = 53,859.22

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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.