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Finding the Fourth Proportional to 63,341.70, 87,420.81 and 36,478.98

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Solution

The fourth proportional to 63,341.70, 87,420.81 and 36,478.98 is: 50,346.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,341.70 : 87,420.81 = 36,478.98 : x
  2. Step 2: Convert to fraction form
    63,341.70/87,420.81 = 36,478.98/x
  3. Step 3: Cross multiply
    63,341.70x = 87,420.81 × 36,478.98
  4. Step 4: Simplify right side
    63,341.70x = 3,189,021,979.57
  5. Step 5: Solve for x
    x = 3,189,021,979.57/63,341.70
  6. Step 6: Final answer
    x = 50,346.33

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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.