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Finding the Fourth Proportional to 52,087.70, 78,022.20 and 43,339.70

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Solution

The fourth proportional to 52,087.70, 78,022.20 and 43,339.70 is: 64,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,087.70 : 78,022.20 = 43,339.70 : x
  2. Step 2: Convert to fraction form
    52,087.70/78,022.20 = 43,339.70/x
  3. Step 3: Cross multiply
    52,087.70x = 78,022.20 × 43,339.70
  4. Step 4: Simplify right side
    52,087.70x = 3,381,458,741.34
  5. Step 5: Solve for x
    x = 3,381,458,741.34/52,087.70
  6. Step 6: Final answer
    x = 64,918.57

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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.