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Finding the Fourth Proportional to 72,001.45, 100,568.75 and 72,001.45

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Solution

The fourth proportional to 72,001.45, 100,568.75 and 72,001.45 is: 100,568.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.45 : 100,568.75 = 72,001.45 : x
  2. Step 2: Convert to fraction form
    72,001.45/100,568.75 = 72,001.45/x
  3. Step 3: Cross multiply
    72,001.45x = 100,568.75 × 72,001.45
  4. Step 4: Simplify right side
    72,001.45x = 7,241,095,824.69
  5. Step 5: Solve for x
    x = 7,241,095,824.69/72,001.45
  6. Step 6: Final answer
    x = 100,568.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.