Home / 71,938.08-99,273.47-40,106.16

Finding the Fourth Proportional to 71,938.08, 99,273.47 and 40,106.16

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Solution

The fourth proportional to 71,938.08, 99,273.47 and 40,106.16 is: 55,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,938.08 : 99,273.47 = 40,106.16 : x
  2. Step 2: Convert to fraction form
    71,938.08/99,273.47 = 40,106.16/x
  3. Step 3: Cross multiply
    71,938.08x = 99,273.47 × 40,106.16
  4. Step 4: Simplify right side
    71,938.08x = 3,981,477,471.04
  5. Step 5: Solve for x
    x = 3,981,477,471.04/71,938.08
  6. Step 6: Final answer
    x = 55,345.90

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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.