Home / 72,018.72-108,060.48-45,716.40

Finding the Fourth Proportional to 72,018.72, 108,060.48 and 45,716.40

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Solution

The fourth proportional to 72,018.72, 108,060.48 and 45,716.40 is: 68,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,018.72 : 108,060.48 = 45,716.40 : x
  2. Step 2: Convert to fraction form
    72,018.72/108,060.48 = 45,716.40/x
  3. Step 3: Cross multiply
    72,018.72x = 108,060.48 × 45,716.40
  4. Step 4: Simplify right side
    72,018.72x = 4,940,136,127.87
  5. Step 5: Solve for x
    x = 4,940,136,127.87/72,018.72
  6. Step 6: Final answer
    x = 68,595.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.