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Finding the Fourth Proportional to 70,856.42, 97,786.28 and 39,025.31

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Solution

The fourth proportional to 70,856.42, 97,786.28 and 39,025.31 is: 53,857.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,856.42 : 97,786.28 = 39,025.31 : x
  2. Step 2: Convert to fraction form
    70,856.42/97,786.28 = 39,025.31/x
  3. Step 3: Cross multiply
    70,856.42x = 97,786.28 × 39,025.31
  4. Step 4: Simplify right side
    70,856.42x = 3,816,139,206.69
  5. Step 5: Solve for x
    x = 3,816,139,206.69/70,856.42
  6. Step 6: Final answer
    x = 53,857.36

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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.