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Finding the Fourth Proportional to 71,903.79, 99,227.73 and 40,074.74

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Solution

The fourth proportional to 71,903.79, 99,227.73 and 40,074.74 is: 55,303.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,903.79 : 99,227.73 = 40,074.74 : x
  2. Step 2: Convert to fraction form
    71,903.79/99,227.73 = 40,074.74/x
  3. Step 3: Cross multiply
    71,903.79x = 99,227.73 × 40,074.74
  4. Step 4: Simplify right side
    71,903.79x = 3,976,525,356.51
  5. Step 5: Solve for x
    x = 3,976,525,356.51/71,903.79
  6. Step 6: Final answer
    x = 55,303.42

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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.