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Finding the Fourth Proportional to 77,445, 106,872.02 and 43,450.66

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Solution

The fourth proportional to 77,445, 106,872.02 and 43,450.66 is: 59,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,445 : 106,872.02 = 43,450.66 : x
  2. Step 2: Convert to fraction form
    77,445/106,872.02 = 43,450.66/x
  3. Step 3: Cross multiply
    77,445x = 106,872.02 × 43,450.66
  4. Step 4: Simplify right side
    77,445x = 4,643,659,804.53
  5. Step 5: Solve for x
    x = 4,643,659,804.53/77,445
  6. Step 6: Final answer
    x = 59,960.74

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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.