Home / 74,722.55-103,115.46-40,729.74

Finding the Fourth Proportional to 74,722.55, 103,115.46 and 40,729.74

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Solution

The fourth proportional to 74,722.55, 103,115.46 and 40,729.74 is: 56,206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,722.55 : 103,115.46 = 40,729.74 : x
  2. Step 2: Convert to fraction form
    74,722.55/103,115.46 = 40,729.74/x
  3. Step 3: Cross multiply
    74,722.55x = 103,115.46 × 40,729.74
  4. Step 4: Simplify right side
    74,722.55x = 4,199,865,641.83
  5. Step 5: Solve for x
    x = 4,199,865,641.83/74,722.55
  6. Step 6: Final answer
    x = 56,206.13

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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.