Home / 72,569.84-100,146.38-40,738.71

Finding the Fourth Proportional to 72,569.84, 100,146.38 and 40,738.71

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Solution

The fourth proportional to 72,569.84, 100,146.38 and 40,738.71 is: 56,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,569.84 : 100,146.38 = 40,738.71 : x
  2. Step 2: Convert to fraction form
    72,569.84/100,146.38 = 40,738.71/x
  3. Step 3: Cross multiply
    72,569.84x = 100,146.38 × 40,738.71
  4. Step 4: Simplify right side
    72,569.84x = 4,079,834,504.23
  5. Step 5: Solve for x
    x = 4,079,834,504.23/72,569.84
  6. Step 6: Final answer
    x = 56,219.42

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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.