Home / 72,133.89-99,542.92-40,302.99

Finding the Fourth Proportional to 72,133.89, 99,542.92 and 40,302.99

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Solution

The fourth proportional to 72,133.89, 99,542.92 and 40,302.99 is: 55,617.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,133.89 : 99,542.92 = 40,302.99 : x
  2. Step 2: Convert to fraction form
    72,133.89/99,542.92 = 40,302.99/x
  3. Step 3: Cross multiply
    72,133.89x = 99,542.92 × 40,302.99
  4. Step 4: Simplify right side
    72,133.89x = 4,011,877,309.33
  5. Step 5: Solve for x
    x = 4,011,877,309.33/72,133.89
  6. Step 6: Final answer
    x = 55,617.09

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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.