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Finding the Fourth Proportional to 61,620.51, 85,020.18 and 36,113.13

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Solution

The fourth proportional to 61,620.51, 85,020.18 and 36,113.13 is: 49,826.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,620.51 : 85,020.18 = 36,113.13 : x
  2. Step 2: Convert to fraction form
    61,620.51/85,020.18 = 36,113.13/x
  3. Step 3: Cross multiply
    61,620.51x = 85,020.18 × 36,113.13
  4. Step 4: Simplify right side
    61,620.51x = 3,070,344,812.96
  5. Step 5: Solve for x
    x = 3,070,344,812.96/61,620.51
  6. Step 6: Final answer
    x = 49,826.67

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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.