Home / 72,143.84-99,556.58-40,313.00

Finding the Fourth Proportional to 72,143.84, 99,556.58 and 40,313.00

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Solution

The fourth proportional to 72,143.84, 99,556.58 and 40,313.00 is: 55,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,143.84 : 99,556.58 = 40,313.00 : x
  2. Step 2: Convert to fraction form
    72,143.84/99,556.58 = 40,313.00/x
  3. Step 3: Cross multiply
    72,143.84x = 99,556.58 × 40,313.00
  4. Step 4: Simplify right side
    72,143.84x = 4,013,424,012.54
  5. Step 5: Solve for x
    x = 4,013,424,012.54/72,143.84
  6. Step 6: Final answer
    x = 55,630.87

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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.