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Finding the Fourth Proportional to 72,340.79, 99,723.80 and 50,762.39

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Solution

The fourth proportional to 72,340.79, 99,723.80 and 50,762.39 is: 69,977.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,340.79 : 99,723.80 = 50,762.39 : x
  2. Step 2: Convert to fraction form
    72,340.79/99,723.80 = 50,762.39/x
  3. Step 3: Cross multiply
    72,340.79x = 99,723.80 × 50,762.39
  4. Step 4: Simplify right side
    72,340.79x = 5,062,217,675.45
  5. Step 5: Solve for x
    x = 5,062,217,675.45/72,340.79
  6. Step 6: Final answer
    x = 69,977.37

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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.