Home / 72,071.53-99,463.62-40,239.76

Finding the Fourth Proportional to 72,071.53, 99,463.62 and 40,239.76

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Solution

The fourth proportional to 72,071.53, 99,463.62 and 40,239.76 is: 55,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,071.53 : 99,463.62 = 40,239.76 : x
  2. Step 2: Convert to fraction form
    72,071.53/99,463.62 = 40,239.76/x
  3. Step 3: Cross multiply
    72,071.53x = 99,463.62 × 40,239.76
  4. Step 4: Simplify right side
    72,071.53x = 4,002,392,197.53
  5. Step 5: Solve for x
    x = 4,002,392,197.53/72,071.53
  6. Step 6: Final answer
    x = 55,533.61

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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.