Home / 72,861.40-109,121.99-56,088.34

Finding the Fourth Proportional to 72,861.40, 109,121.99 and 56,088.34

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Solution

The fourth proportional to 72,861.40, 109,121.99 and 56,088.34 is: 84,001.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,861.40 : 109,121.99 = 56,088.34 : x
  2. Step 2: Convert to fraction form
    72,861.40/109,121.99 = 56,088.34/x
  3. Step 3: Cross multiply
    72,861.40x = 109,121.99 × 56,088.34
  4. Step 4: Simplify right side
    72,861.40x = 6,120,470,730.99
  5. Step 5: Solve for x
    x = 6,120,470,730.99/72,861.40
  6. Step 6: Final answer
    x = 84,001.56

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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.