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Finding the Fourth Proportional to 60,840, 91,277.28 and 19,288.08

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Solution

The fourth proportional to 60,840, 91,277.28 and 19,288.08 is: 28,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,840 : 91,277.28 = 19,288.08 : x
  2. Step 2: Convert to fraction form
    60,840/91,277.28 = 19,288.08/x
  3. Step 3: Cross multiply
    60,840x = 91,277.28 × 19,288.08
  4. Step 4: Simplify right side
    60,840x = 1,760,563,478.82
  5. Step 5: Solve for x
    x = 1,760,563,478.82/60,840
  6. Step 6: Final answer
    x = 28,937.60

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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.