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Finding the Fourth Proportional to 72,396.40, 101,666 and 72,396.40

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Solution

The fourth proportional to 72,396.40, 101,666 and 72,396.40 is: 101,666

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,396.40 : 101,666 = 72,396.40 : x
  2. Step 2: Convert to fraction form
    72,396.40/101,666 = 72,396.40/x
  3. Step 3: Cross multiply
    72,396.40x = 101,666 × 72,396.40
  4. Step 4: Simplify right side
    72,396.40x = 7,360,252,402.40
  5. Step 5: Solve for x
    x = 7,360,252,402.40/72,396.40
  6. Step 6: Final answer
    x = 101,666

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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.