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Finding the Fourth Proportional to 85,901.50, 118,544.07 and 48,187.90

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Solution

The fourth proportional to 85,901.50, 118,544.07 and 48,187.90 is: 66,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901.50 : 118,544.07 = 48,187.90 : x
  2. Step 2: Convert to fraction form
    85,901.50/118,544.07 = 48,187.90/x
  3. Step 3: Cross multiply
    85,901.50x = 118,544.07 × 48,187.90
  4. Step 4: Simplify right side
    85,901.50x = 5,712,389,790.75
  5. Step 5: Solve for x
    x = 5,712,389,790.75/85,901.50
  6. Step 6: Final answer
    x = 66,499.30

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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.