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Finding the Fourth Proportional to 60,930.64, 91,362 and 18,798.76

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Solution

The fourth proportional to 60,930.64, 91,362 and 18,798.76 is: 28,187.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,930.64 : 91,362 = 18,798.76 : x
  2. Step 2: Convert to fraction form
    60,930.64/91,362 = 18,798.76/x
  3. Step 3: Cross multiply
    60,930.64x = 91,362 × 18,798.76
  4. Step 4: Simplify right side
    60,930.64x = 1,717,492,311.12
  5. Step 5: Solve for x
    x = 1,717,492,311.12/60,930.64
  6. Step 6: Final answer
    x = 28,187.66

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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.