Home / 72,561.57-100,134.14-40,729.65

Finding the Fourth Proportional to 72,561.57, 100,134.14 and 40,729.65

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Solution

The fourth proportional to 72,561.57, 100,134.14 and 40,729.65 is: 56,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,561.57 : 100,134.14 = 40,729.65 : x
  2. Step 2: Convert to fraction form
    72,561.57/100,134.14 = 40,729.65/x
  3. Step 3: Cross multiply
    72,561.57x = 100,134.14 × 40,729.65
  4. Step 4: Simplify right side
    72,561.57x = 4,078,428,271.60
  5. Step 5: Solve for x
    x = 4,078,428,271.60/72,561.57
  6. Step 6: Final answer
    x = 56,206.45

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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.