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Finding the Fourth Proportional to 77,871.60, 107,465.02 and 43,880.40

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Solution

The fourth proportional to 77,871.60, 107,465.02 and 43,880.40 is: 60,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,871.60 : 107,465.02 = 43,880.40 : x
  2. Step 2: Convert to fraction form
    77,871.60/107,465.02 = 43,880.40/x
  3. Step 3: Cross multiply
    77,871.60x = 107,465.02 × 43,880.40
  4. Step 4: Simplify right side
    77,871.60x = 4,715,608,063.61
  5. Step 5: Solve for x
    x = 4,715,608,063.61/77,871.60
  6. Step 6: Final answer
    x = 60,556.20

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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.