Home / 72,222.05-99,666.35-40,390.95

Finding the Fourth Proportional to 72,222.05, 99,666.35 and 40,390.95

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Solution

The fourth proportional to 72,222.05, 99,666.35 and 40,390.95 is: 55,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,222.05 : 99,666.35 = 40,390.95 : x
  2. Step 2: Convert to fraction form
    72,222.05/99,666.35 = 40,390.95/x
  3. Step 3: Cross multiply
    72,222.05x = 99,666.35 × 40,390.95
  4. Step 4: Simplify right side
    72,222.05x = 4,025,618,559.53
  5. Step 5: Solve for x
    x = 4,025,618,559.53/72,222.05
  6. Step 6: Final answer
    x = 55,739.47

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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.