Home / 77,105.01-115,337.67-72,381.09

Finding the Fourth Proportional to 77,105.01, 115,337.67 and 72,381.09

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Solution

The fourth proportional to 77,105.01, 115,337.67 and 72,381.09 is: 108,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,105.01 : 115,337.67 = 72,381.09 : x
  2. Step 2: Convert to fraction form
    77,105.01/115,337.67 = 72,381.09/x
  3. Step 3: Cross multiply
    77,105.01x = 115,337.67 × 72,381.09
  4. Step 4: Simplify right side
    77,105.01x = 8,348,266,433.75
  5. Step 5: Solve for x
    x = 8,348,266,433.75/77,105.01
  6. Step 6: Final answer
    x = 108,271.38

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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.