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Finding the Fourth Proportional to 77,353.50, 106,742.07 and 43,818.78

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Solution

The fourth proportional to 77,353.50, 106,742.07 and 43,818.78 is: 60,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,353.50 : 106,742.07 = 43,818.78 : x
  2. Step 2: Convert to fraction form
    77,353.50/106,742.07 = 43,818.78/x
  3. Step 3: Cross multiply
    77,353.50x = 106,742.07 × 43,818.78
  4. Step 4: Simplify right side
    77,353.50x = 4,677,307,282.07
  5. Step 5: Solve for x
    x = 4,677,307,282.07/77,353.50
  6. Step 6: Final answer
    x = 60,466.65

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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.