Home / 61,931.08-85,500.30-40,771.86

Finding the Fourth Proportional to 61,931.08, 85,500.30 and 40,771.86

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Solution

The fourth proportional to 61,931.08, 85,500.30 and 40,771.86 is: 56,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,931.08 : 85,500.30 = 40,771.86 : x
  2. Step 2: Convert to fraction form
    61,931.08/85,500.30 = 40,771.86/x
  3. Step 3: Cross multiply
    61,931.08x = 85,500.30 × 40,771.86
  4. Step 4: Simplify right side
    61,931.08x = 3,486,005,834.06
  5. Step 5: Solve for x
    x = 3,486,005,834.06/61,931.08
  6. Step 6: Final answer
    x = 56,288.47

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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.