Home / 72,166.81-99,525.66-45,311.80

Finding the Fourth Proportional to 72,166.81, 99,525.66 and 45,311.80

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Solution

The fourth proportional to 72,166.81, 99,525.66 and 45,311.80 is: 62,489.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,166.81 : 99,525.66 = 45,311.80 : x
  2. Step 2: Convert to fraction form
    72,166.81/99,525.66 = 45,311.80/x
  3. Step 3: Cross multiply
    72,166.81x = 99,525.66 × 45,311.80
  4. Step 4: Simplify right side
    72,166.81x = 4,509,686,800.79
  5. Step 5: Solve for x
    x = 4,509,686,800.79/72,166.81
  6. Step 6: Final answer
    x = 62,489.76

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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.