Home / 72,137.42-99,550.14-40,307.66

Finding the Fourth Proportional to 72,137.42, 99,550.14 and 40,307.66

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Solution

The fourth proportional to 72,137.42, 99,550.14 and 40,307.66 is: 55,624.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,137.42 : 99,550.14 = 40,307.66 : x
  2. Step 2: Convert to fraction form
    72,137.42/99,550.14 = 40,307.66/x
  3. Step 3: Cross multiply
    72,137.42x = 99,550.14 × 40,307.66
  4. Step 4: Simplify right side
    72,137.42x = 4,012,633,196.07
  5. Step 5: Solve for x
    x = 4,012,633,196.07/72,137.42
  6. Step 6: Final answer
    x = 55,624.85

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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.