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Finding the Fourth Proportional to 77,331.70, 115,997.55 and 73,702.90

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Solution

The fourth proportional to 77,331.70, 115,997.55 and 73,702.90 is: 110,554.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,331.70 : 115,997.55 = 73,702.90 : x
  2. Step 2: Convert to fraction form
    77,331.70/115,997.55 = 73,702.90/x
  3. Step 3: Cross multiply
    77,331.70x = 115,997.55 × 73,702.90
  4. Step 4: Simplify right side
    77,331.70x = 8,549,355,827.90
  5. Step 5: Solve for x
    x = 8,549,355,827.90/77,331.70
  6. Step 6: Final answer
    x = 110,554.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.