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Finding the Fourth Proportional to 56,941.70, 85,412.55 and 15,388.70

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Solution

The fourth proportional to 56,941.70, 85,412.55 and 15,388.70 is: 23,083.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,941.70 : 85,412.55 = 15,388.70 : x
  2. Step 2: Convert to fraction form
    56,941.70/85,412.55 = 15,388.70/x
  3. Step 3: Cross multiply
    56,941.70x = 85,412.55 × 15,388.70
  4. Step 4: Simplify right side
    56,941.70x = 1,314,388,108.19
  5. Step 5: Solve for x
    x = 1,314,388,108.19/56,941.70
  6. Step 6: Final answer
    x = 23,083.05

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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.