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Finding the Fourth Proportional to 66,064.54, 99,111.94 and 28,630.90

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Solution

The fourth proportional to 66,064.54, 99,111.94 and 28,630.90 is: 42,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,064.54 : 99,111.94 = 28,630.90 : x
  2. Step 2: Convert to fraction form
    66,064.54/99,111.94 = 28,630.90/x
  3. Step 3: Cross multiply
    66,064.54x = 99,111.94 × 28,630.90
  4. Step 4: Simplify right side
    66,064.54x = 2,837,663,547.39
  5. Step 5: Solve for x
    x = 2,837,663,547.39/66,064.54
  6. Step 6: Final answer
    x = 42,952.90

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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.