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Finding the Fourth Proportional to 86,566.70, 129,850.05 and 47,200.70

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Solution

The fourth proportional to 86,566.70, 129,850.05 and 47,200.70 is: 70,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,566.70 : 129,850.05 = 47,200.70 : x
  2. Step 2: Convert to fraction form
    86,566.70/129,850.05 = 47,200.70/x
  3. Step 3: Cross multiply
    86,566.70x = 129,850.05 × 47,200.70
  4. Step 4: Simplify right side
    86,566.70x = 6,129,013,255.04
  5. Step 5: Solve for x
    x = 6,129,013,255.04/86,566.70
  6. Step 6: Final answer
    x = 70,801.05

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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.