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Finding the Fourth Proportional to 77,420.55, 106,841.52 and 43,436.55

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Solution

The fourth proportional to 77,420.55, 106,841.52 and 43,436.55 is: 59,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,420.55 : 106,841.52 = 43,436.55 : x
  2. Step 2: Convert to fraction form
    77,420.55/106,841.52 = 43,436.55/x
  3. Step 3: Cross multiply
    77,420.55x = 106,841.52 × 43,436.55
  4. Step 4: Simplify right side
    77,420.55x = 4,640,827,025.56
  5. Step 5: Solve for x
    x = 4,640,827,025.56/77,420.55
  6. Step 6: Final answer
    x = 59,943.09

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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.