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Finding the Fourth Proportional to 57,967.50, 86,925.93 and 20,515.13

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Solution

The fourth proportional to 57,967.50, 86,925.93 and 20,515.13 is: 30,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,967.50 : 86,925.93 = 20,515.13 : x
  2. Step 2: Convert to fraction form
    57,967.50/86,925.93 = 20,515.13/x
  3. Step 3: Cross multiply
    57,967.50x = 86,925.93 × 20,515.13
  4. Step 4: Simplify right side
    57,967.50x = 1,783,296,319.69
  5. Step 5: Solve for x
    x = 1,783,296,319.69/57,967.50
  6. Step 6: Final answer
    x = 30,763.73

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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.