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Finding the Fourth Proportional to 72,362.40, 108,673.20 and 52,663.20

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Solution

The fourth proportional to 72,362.40, 108,673.20 and 52,663.20 is: 79,089.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,362.40 : 108,673.20 = 52,663.20 : x
  2. Step 2: Convert to fraction form
    72,362.40/108,673.20 = 52,663.20/x
  3. Step 3: Cross multiply
    72,362.40x = 108,673.20 × 52,663.20
  4. Step 4: Simplify right side
    72,362.40x = 5,723,078,466.24
  5. Step 5: Solve for x
    x = 5,723,078,466.24/72,362.40
  6. Step 6: Final answer
    x = 79,089.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.