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Finding the Fourth Proportional to 60,885.35, 91,328.19 and 18,764.07

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Solution

The fourth proportional to 60,885.35, 91,328.19 and 18,764.07 is: 28,146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,885.35 : 91,328.19 = 18,764.07 : x
  2. Step 2: Convert to fraction form
    60,885.35/91,328.19 = 18,764.07/x
  3. Step 3: Cross multiply
    60,885.35x = 91,328.19 × 18,764.07
  4. Step 4: Simplify right side
    60,885.35x = 1,713,688,550.13
  5. Step 5: Solve for x
    x = 1,713,688,550.13/60,885.35
  6. Step 6: Final answer
    x = 28,146.16

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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.