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Finding the Fourth Proportional to 77,219.40, 115,893.90 and 37,810.20

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Solution

The fourth proportional to 77,219.40, 115,893.90 and 37,810.20 is: 56,747.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,219.40 : 115,893.90 = 37,810.20 : x
  2. Step 2: Convert to fraction form
    77,219.40/115,893.90 = 37,810.20/x
  3. Step 3: Cross multiply
    77,219.40x = 115,893.90 × 37,810.20
  4. Step 4: Simplify right side
    77,219.40x = 4,381,971,537.78
  5. Step 5: Solve for x
    x = 4,381,971,537.78/77,219.40
  6. Step 6: Final answer
    x = 56,747.03

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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.