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Finding the Fourth Proportional to 52,002.70, 78,004.05 and 39,561.10

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Solution

The fourth proportional to 52,002.70, 78,004.05 and 39,561.10 is: 59,341.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,002.70 : 78,004.05 = 39,561.10 : x
  2. Step 2: Convert to fraction form
    52,002.70/78,004.05 = 39,561.10/x
  3. Step 3: Cross multiply
    52,002.70x = 78,004.05 × 39,561.10
  4. Step 4: Simplify right side
    52,002.70x = 3,085,926,022.46
  5. Step 5: Solve for x
    x = 3,085,926,022.46/52,002.70
  6. Step 6: Final answer
    x = 59,341.65

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1.5x scale

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.