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Finding the Fourth Proportional to 70,838.89, 97,758.39 and 39,010.75

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Solution

The fourth proportional to 70,838.89, 97,758.39 and 39,010.75 is: 53,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,838.89 : 97,758.39 = 39,010.75 : x
  2. Step 2: Convert to fraction form
    70,838.89/97,758.39 = 39,010.75/x
  3. Step 3: Cross multiply
    70,838.89x = 97,758.39 × 39,010.75
  4. Step 4: Simplify right side
    70,838.89x = 3,813,628,014.59
  5. Step 5: Solve for x
    x = 3,813,628,014.59/70,838.89
  6. Step 6: Final answer
    x = 53,835.23

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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.