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Finding the Fourth Proportional to 61,891.50, 85,421.07 and 36,740.46

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Solution

The fourth proportional to 61,891.50, 85,421.07 and 36,740.46 is: 50,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,891.50 : 85,421.07 = 36,740.46 : x
  2. Step 2: Convert to fraction form
    61,891.50/85,421.07 = 36,740.46/x
  3. Step 3: Cross multiply
    61,891.50x = 85,421.07 × 36,740.46
  4. Step 4: Simplify right side
    61,891.50x = 3,138,409,405.49
  5. Step 5: Solve for x
    x = 3,138,409,405.49/61,891.50
  6. Step 6: Final answer
    x = 50,708.25

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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.