Home / 74,122.85-102,289.57-40,131.35

Finding the Fourth Proportional to 74,122.85, 102,289.57 and 40,131.35

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Solution

The fourth proportional to 74,122.85, 102,289.57 and 40,131.35 is: 55,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,122.85 : 102,289.57 = 40,131.35 : x
  2. Step 2: Convert to fraction form
    74,122.85/102,289.57 = 40,131.35/x
  3. Step 3: Cross multiply
    74,122.85x = 102,289.57 × 40,131.35
  4. Step 4: Simplify right side
    74,122.85x = 4,105,018,306.83
  5. Step 5: Solve for x
    x = 4,105,018,306.83/74,122.85
  6. Step 6: Final answer
    x = 55,381.28

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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.