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Finding the Fourth Proportional to 56,813.60, 78,408.60 and 34,159.97

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Solution

The fourth proportional to 56,813.60, 78,408.60 and 34,159.97 is: 47,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,813.60 : 78,408.60 = 34,159.97 : x
  2. Step 2: Convert to fraction form
    56,813.60/78,408.60 = 34,159.97/x
  3. Step 3: Cross multiply
    56,813.60x = 78,408.60 × 34,159.97
  4. Step 4: Simplify right side
    56,813.60x = 2,678,435,423.74
  5. Step 5: Solve for x
    x = 2,678,435,423.74/56,813.60
  6. Step 6: Final answer
    x = 47,144.27

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1.5x scale

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.