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Finding the Fourth Proportional to 72,711.70, 101,865.50 and 72,711.70

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Solution

The fourth proportional to 72,711.70, 101,865.50 and 72,711.70 is: 101,865.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,711.70 : 101,865.50 = 72,711.70 : x
  2. Step 2: Convert to fraction form
    72,711.70/101,865.50 = 72,711.70/x
  3. Step 3: Cross multiply
    72,711.70x = 101,865.50 × 72,711.70
  4. Step 4: Simplify right side
    72,711.70x = 7,406,813,676.35
  5. Step 5: Solve for x
    x = 7,406,813,676.35/72,711.70
  6. Step 6: Final answer
    x = 101,865.50

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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.