Home / 56,129.44-84,074.45-45,409.80

Finding the Fourth Proportional to 56,129.44, 84,074.45 and 45,409.80

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Solution

The fourth proportional to 56,129.44, 84,074.45 and 45,409.80 is: 68,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.44 : 84,074.45 = 45,409.80 : x
  2. Step 2: Convert to fraction form
    56,129.44/84,074.45 = 45,409.80/x
  3. Step 3: Cross multiply
    56,129.44x = 84,074.45 × 45,409.80
  4. Step 4: Simplify right side
    56,129.44x = 3,817,803,312.19
  5. Step 5: Solve for x
    x = 3,817,803,312.19/56,129.44
  6. Step 6: Final answer
    x = 68,017.85

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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.