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Finding the Fourth Proportional to 85,803.57, 118,408.77 and 52,269.57

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Solution

The fourth proportional to 85,803.57, 118,408.77 and 52,269.57 is: 72,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803.57 : 118,408.77 = 52,269.57 : x
  2. Step 2: Convert to fraction form
    85,803.57/118,408.77 = 52,269.57/x
  3. Step 3: Cross multiply
    85,803.57x = 118,408.77 × 52,269.57
  4. Step 4: Simplify right side
    85,803.57x = 6,189,175,492.13
  5. Step 5: Solve for x
    x = 6,189,175,492.13/85,803.57
  6. Step 6: Final answer
    x = 72,131.91

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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.