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Finding the Fourth Proportional to 77,403.52, 106,818.88 and 43,869.12

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Solution

The fourth proportional to 77,403.52, 106,818.88 and 43,869.12 is: 60,540.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,403.52 : 106,818.88 = 43,869.12 : x
  2. Step 2: Convert to fraction form
    77,403.52/106,818.88 = 43,869.12/x
  3. Step 3: Cross multiply
    77,403.52x = 106,818.88 × 43,869.12
  4. Step 4: Simplify right side
    77,403.52x = 4,686,050,264.99
  5. Step 5: Solve for x
    x = 4,686,050,264.99/77,403.52
  6. Step 6: Final answer
    x = 60,540.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.