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Finding the Fourth Proportional to 77,489.59, 106,940.41 and 51,603.75

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Solution

The fourth proportional to 77,489.59, 106,940.41 and 51,603.75 is: 71,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,489.59 : 106,940.41 = 51,603.75 : x
  2. Step 2: Convert to fraction form
    77,489.59/106,940.41 = 51,603.75/x
  3. Step 3: Cross multiply
    77,489.59x = 106,940.41 × 51,603.75
  4. Step 4: Simplify right side
    77,489.59x = 5,518,525,638.66
  5. Step 5: Solve for x
    x = 5,518,525,638.66/77,489.59
  6. Step 6: Final answer
    x = 71,216.35

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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.