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Finding the Fourth Proportional to 60,873, 91,309.53 and 19,320

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Solution

The fourth proportional to 60,873, 91,309.53 and 19,320 is: 28,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,873 : 91,309.53 = 19,320 : x
  2. Step 2: Convert to fraction form
    60,873/91,309.53 = 19,320/x
  3. Step 3: Cross multiply
    60,873x = 91,309.53 × 19,320
  4. Step 4: Simplify right side
    60,873x = 1,764,100,119.60
  5. Step 5: Solve for x
    x = 1,764,100,119.60/60,873
  6. Step 6: Final answer
    x = 28,980.01

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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.