Home / 72,090.55-99,429.67-43,380.28

Finding the Fourth Proportional to 72,090.55, 99,429.67 and 43,380.28

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Solution

The fourth proportional to 72,090.55, 99,429.67 and 43,380.28 is: 59,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,090.55 : 99,429.67 = 43,380.28 : x
  2. Step 2: Convert to fraction form
    72,090.55/99,429.67 = 43,380.28/x
  3. Step 3: Cross multiply
    72,090.55x = 99,429.67 × 43,380.28
  4. Step 4: Simplify right side
    72,090.55x = 4,313,286,567.88
  5. Step 5: Solve for x
    x = 4,313,286,567.88/72,090.55
  6. Step 6: Final answer
    x = 59,831.51

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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.