Home / 56,931.04-85,408.08-19,997.92

Finding the Fourth Proportional to 56,931.04, 85,408.08 and 19,997.92

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Solution

The fourth proportional to 56,931.04, 85,408.08 and 19,997.92 is: 30,000.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,931.04 : 85,408.08 = 19,997.92 : x
  2. Step 2: Convert to fraction form
    56,931.04/85,408.08 = 19,997.92/x
  3. Step 3: Cross multiply
    56,931.04x = 85,408.08 × 19,997.92
  4. Step 4: Simplify right side
    56,931.04x = 1,707,983,951.19
  5. Step 5: Solve for x
    x = 1,707,983,951.19/56,931.04
  6. Step 6: Final answer
    x = 30,000.93

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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.