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Finding the Fourth Proportional to 61,681.72, 85,122.32 and 37,821.54

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Solution

The fourth proportional to 61,681.72, 85,122.32 and 37,821.54 is: 52,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,681.72 : 85,122.32 = 37,821.54 : x
  2. Step 2: Convert to fraction form
    61,681.72/85,122.32 = 37,821.54/x
  3. Step 3: Cross multiply
    61,681.72x = 85,122.32 × 37,821.54
  4. Step 4: Simplify right side
    61,681.72x = 3,219,457,230.77
  5. Step 5: Solve for x
    x = 3,219,457,230.77/61,681.72
  6. Step 6: Final answer
    x = 52,194.67

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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.