Home / 56,732.10-78,314.62-40,389.90

Finding the Fourth Proportional to 56,732.10, 78,314.62 and 40,389.90

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Solution

The fourth proportional to 56,732.10, 78,314.62 and 40,389.90 is: 55,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,732.10 : 78,314.62 = 40,389.90 : x
  2. Step 2: Convert to fraction form
    56,732.10/78,314.62 = 40,389.90/x
  3. Step 3: Cross multiply
    56,732.10x = 78,314.62 × 40,389.90
  4. Step 4: Simplify right side
    56,732.10x = 3,163,119,670.34
  5. Step 5: Solve for x
    x = 3,163,119,670.34/56,732.10
  6. Step 6: Final answer
    x = 55,755.38

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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.