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Finding the Fourth Proportional to 60,655.47, 90,965.64 and 20,673.54

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Solution

The fourth proportional to 60,655.47, 90,965.64 and 20,673.54 is: 31,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,655.47 : 90,965.64 = 20,673.54 : x
  2. Step 2: Convert to fraction form
    60,655.47/90,965.64 = 20,673.54/x
  3. Step 3: Cross multiply
    60,655.47x = 90,965.64 × 20,673.54
  4. Step 4: Simplify right side
    60,655.47x = 1,880,581,797.17
  5. Step 5: Solve for x
    x = 1,880,581,797.17/60,655.47
  6. Step 6: Final answer
    x = 31,004.32

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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.