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Finding the Fourth Proportional to 77,165.30, 115,604.67 and 39,748.07

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Solution

The fourth proportional to 77,165.30, 115,604.67 and 39,748.07 is: 59,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,165.30 : 115,604.67 = 39,748.07 : x
  2. Step 2: Convert to fraction form
    77,165.30/115,604.67 = 39,748.07/x
  3. Step 3: Cross multiply
    77,165.30x = 115,604.67 × 39,748.07
  4. Step 4: Simplify right side
    77,165.30x = 4,595,062,515.49
  5. Step 5: Solve for x
    x = 4,595,062,515.49/77,165.30
  6. Step 6: Final answer
    x = 59,548.30

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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.