Home / 72,861.02-109,121.43-56,087.95

Finding the Fourth Proportional to 72,861.02, 109,121.43 and 56,087.95

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Solution

The fourth proportional to 72,861.02, 109,121.43 and 56,087.95 is: 84,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,861.02 : 109,121.43 = 56,087.95 : x
  2. Step 2: Convert to fraction form
    72,861.02/109,121.43 = 56,087.95/x
  3. Step 3: Cross multiply
    72,861.02x = 109,121.43 × 56,087.95
  4. Step 4: Simplify right side
    72,861.02x = 6,120,397,309.77
  5. Step 5: Solve for x
    x = 6,120,397,309.77/72,861.02
  6. Step 6: Final answer
    x = 84,000.98

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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.