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Finding the Fourth Proportional to 61,820.82, 92,730.21 and 19,700.32

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Solution

The fourth proportional to 61,820.82, 92,730.21 and 19,700.32 is: 29,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,820.82 : 92,730.21 = 19,700.32 : x
  2. Step 2: Convert to fraction form
    61,820.82/92,730.21 = 19,700.32/x
  3. Step 3: Cross multiply
    61,820.82x = 92,730.21 × 19,700.32
  4. Step 4: Simplify right side
    61,820.82x = 1,826,814,810.67
  5. Step 5: Solve for x
    x = 1,826,814,810.67/61,820.82
  6. Step 6: Final answer
    x = 29,550.15

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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.