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Finding the Fourth Proportional to 66,547.44, 99,820.92 and 19,800.32

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Solution

The fourth proportional to 66,547.44, 99,820.92 and 19,800.32 is: 29,700.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.44 : 99,820.92 = 19,800.32 : x
  2. Step 2: Convert to fraction form
    66,547.44/99,820.92 = 19,800.32/x
  3. Step 3: Cross multiply
    66,547.44x = 99,820.92 × 19,800.32
  4. Step 4: Simplify right side
    66,547.44x = 1,976,486,158.69
  5. Step 5: Solve for x
    x = 1,976,486,158.69/66,547.44
  6. Step 6: Final answer
    x = 29,700.41

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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.