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Finding the Fourth Proportional to 77,343.89, 106,702.69 and 47,118.18

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Solution

The fourth proportional to 77,343.89, 106,702.69 and 47,118.18 is: 65,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,343.89 : 106,702.69 = 47,118.18 : x
  2. Step 2: Convert to fraction form
    77,343.89/106,702.69 = 47,118.18/x
  3. Step 3: Cross multiply
    77,343.89x = 106,702.69 × 47,118.18
  4. Step 4: Simplify right side
    77,343.89x = 5,027,636,553.90
  5. Step 5: Solve for x
    x = 5,027,636,553.90/77,343.89
  6. Step 6: Final answer
    x = 65,003.67

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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.