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Finding the Fourth Proportional to 61,609.71, 85,015.08 and 45,485.58

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Solution

The fourth proportional to 61,609.71, 85,015.08 and 45,485.58 is: 62,765.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,609.71 : 85,015.08 = 45,485.58 : x
  2. Step 2: Convert to fraction form
    61,609.71/85,015.08 = 45,485.58/x
  3. Step 3: Cross multiply
    61,609.71x = 85,015.08 × 45,485.58
  4. Step 4: Simplify right side
    61,609.71x = 3,866,960,222.55
  5. Step 5: Solve for x
    x = 3,866,960,222.55/61,609.71
  6. Step 6: Final answer
    x = 62,765.43

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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.