Home / 72,416.55-99,940.73-40,154.37

Finding the Fourth Proportional to 72,416.55, 99,940.73 and 40,154.37

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Solution

The fourth proportional to 72,416.55, 99,940.73 and 40,154.37 is: 55,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.55 : 99,940.73 = 40,154.37 : x
  2. Step 2: Convert to fraction form
    72,416.55/99,940.73 = 40,154.37/x
  3. Step 3: Cross multiply
    72,416.55x = 99,940.73 × 40,154.37
  4. Step 4: Simplify right side
    72,416.55x = 4,013,056,849.72
  5. Step 5: Solve for x
    x = 4,013,056,849.72/72,416.55
  6. Step 6: Final answer
    x = 55,416.29

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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.