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Finding the Fourth Proportional to 45,262.80, 67,901.76 and 18,969.53

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Solution

The fourth proportional to 45,262.80, 67,901.76 and 18,969.53 is: 28,457.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,262.80 : 67,901.76 = 18,969.53 : x
  2. Step 2: Convert to fraction form
    45,262.80/67,901.76 = 18,969.53/x
  3. Step 3: Cross multiply
    45,262.80x = 67,901.76 × 18,969.53
  4. Step 4: Simplify right side
    45,262.80x = 1,288,064,133.86
  5. Step 5: Solve for x
    x = 1,288,064,133.86/45,262.80
  6. Step 6: Final answer
    x = 28,457.46

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1.5x scale

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.