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Finding the Fourth Proportional to 77,403.52, 106,818.06 and 43,419.55

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Solution

The fourth proportional to 77,403.52, 106,818.06 and 43,419.55 is: 59,919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,403.52 : 106,818.06 = 43,419.55 : x
  2. Step 2: Convert to fraction form
    77,403.52/106,818.06 = 43,419.55/x
  3. Step 3: Cross multiply
    77,403.52x = 106,818.06 × 43,419.55
  4. Step 4: Simplify right side
    77,403.52x = 4,637,992,097.07
  5. Step 5: Solve for x
    x = 4,637,992,097.07/77,403.52
  6. Step 6: Final answer
    x = 59,919.65

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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.