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Finding the Fourth Proportional to 61,820.70, 92,730.03 and 19,700.21

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Solution

The fourth proportional to 61,820.70, 92,730.03 and 19,700.21 is: 29,549.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,820.70 : 92,730.03 = 19,700.21 : x
  2. Step 2: Convert to fraction form
    61,820.70/92,730.03 = 19,700.21/x
  3. Step 3: Cross multiply
    61,820.70x = 92,730.03 × 19,700.21
  4. Step 4: Simplify right side
    61,820.70x = 1,826,800,600.66
  5. Step 5: Solve for x
    x = 1,826,800,600.66/61,820.70
  6. Step 6: Final answer
    x = 29,549.98

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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.