Home / 72,177.05-99,604.46-40,345.93

Finding the Fourth Proportional to 72,177.05, 99,604.46 and 40,345.93

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Solution

The fourth proportional to 72,177.05, 99,604.46 and 40,345.93 is: 55,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.05 : 99,604.46 = 40,345.93 : x
  2. Step 2: Convert to fraction form
    72,177.05/99,604.46 = 40,345.93/x
  3. Step 3: Cross multiply
    72,177.05x = 99,604.46 × 40,345.93
  4. Step 4: Simplify right side
    72,177.05x = 4,018,633,871.10
  5. Step 5: Solve for x
    x = 4,018,633,871.10/72,177.05
  6. Step 6: Final answer
    x = 55,677.45

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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.