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Finding the Fourth Proportional to 60,853.40, 91,287.77 and 20,861.54

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Solution

The fourth proportional to 60,853.40, 91,287.77 and 20,861.54 is: 31,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,853.40 : 91,287.77 = 20,861.54 : x
  2. Step 2: Convert to fraction form
    60,853.40/91,287.77 = 20,861.54/x
  3. Step 3: Cross multiply
    60,853.40x = 91,287.77 × 20,861.54
  4. Step 4: Simplify right side
    60,853.40x = 1,904,402,904.62
  5. Step 5: Solve for x
    x = 1,904,402,904.62/60,853.40
  6. Step 6: Final answer
    x = 31,294.93

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1.5x scale

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.