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Finding the Fourth Proportional to 64,950.50, 89,622.07 and 39,443.57

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Solution

The fourth proportional to 64,950.50, 89,622.07 and 39,443.57 is: 54,426.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,950.50 : 89,622.07 = 39,443.57 : x
  2. Step 2: Convert to fraction form
    64,950.50/89,622.07 = 39,443.57/x
  3. Step 3: Cross multiply
    64,950.50x = 89,622.07 × 39,443.57
  4. Step 4: Simplify right side
    64,950.50x = 3,535,013,844.87
  5. Step 5: Solve for x
    x = 3,535,013,844.87/64,950.50
  6. Step 6: Final answer
    x = 54,426.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.