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Finding the Fourth Proportional to 60,859.74, 91,292.90 and 18,768.80

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Solution

The fourth proportional to 60,859.74, 91,292.90 and 18,768.80 is: 28,154.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,859.74 : 91,292.90 = 18,768.80 : x
  2. Step 2: Convert to fraction form
    60,859.74/91,292.90 = 18,768.80/x
  3. Step 3: Cross multiply
    60,859.74x = 91,292.90 × 18,768.80
  4. Step 4: Simplify right side
    60,859.74x = 1,713,457,631.21
  5. Step 5: Solve for x
    x = 1,713,457,631.21/60,859.74
  6. Step 6: Final answer
    x = 28,154.21

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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.