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Finding the Fourth Proportional to 73,006.40, 109,639.20 and 53,307.20

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Solution

The fourth proportional to 73,006.40, 109,639.20 and 53,307.20 is: 80,055.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,006.40 : 109,639.20 = 53,307.20 : x
  2. Step 2: Convert to fraction form
    73,006.40/109,639.20 = 53,307.20/x
  3. Step 3: Cross multiply
    73,006.40x = 109,639.20 × 53,307.20
  4. Step 4: Simplify right side
    73,006.40x = 5,844,558,762.24
  5. Step 5: Solve for x
    x = 5,844,558,762.24/73,006.40
  6. Step 6: Final answer
    x = 80,055.43

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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.