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Finding the Fourth Proportional to 145,764.87, 218,674.87 and 57,012.77

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Solution

The fourth proportional to 145,764.87, 218,674.87 and 57,012.77 is: 85,529.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,764.87 : 218,674.87 = 57,012.77 : x
  2. Step 2: Convert to fraction form
    145,764.87/218,674.87 = 57,012.77/x
  3. Step 3: Cross multiply
    145,764.87x = 218,674.87 × 57,012.77
  4. Step 4: Simplify right side
    145,764.87x = 12,467,260,068.09
  5. Step 5: Solve for x
    x = 12,467,260,068.09/145,764.87
  6. Step 6: Final answer
    x = 85,529.94

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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.