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Finding the Fourth Proportional to 85,355.70, 117,790.86 and 47,115.24

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Solution

The fourth proportional to 85,355.70, 117,790.86 and 47,115.24 is: 65,019.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,355.70 : 117,790.86 = 47,115.24 : x
  2. Step 2: Convert to fraction form
    85,355.70/117,790.86 = 47,115.24/x
  3. Step 3: Cross multiply
    85,355.70x = 117,790.86 × 47,115.24
  4. Step 4: Simplify right side
    85,355.70x = 5,549,744,638.71
  5. Step 5: Solve for x
    x = 5,549,744,638.71/85,355.70
  6. Step 6: Final answer
    x = 65,019.03

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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.