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Finding the Fourth Proportional to 61,820.19, 92,729.28 and 19,699.71

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Solution

The fourth proportional to 61,820.19, 92,729.28 and 19,699.71 is: 29,549.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,820.19 : 92,729.28 = 19,699.71 : x
  2. Step 2: Convert to fraction form
    61,820.19/92,729.28 = 19,699.71/x
  3. Step 3: Cross multiply
    61,820.19x = 92,729.28 × 19,699.71
  4. Step 4: Simplify right side
    61,820.19x = 1,826,739,924.51
  5. Step 5: Solve for x
    x = 1,826,739,924.51/61,820.19
  6. Step 6: Final answer
    x = 29,549.24

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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.