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Finding the Fourth Proportional to 66,347.86, 99,448.80 and 28,864.30

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Solution

The fourth proportional to 66,347.86, 99,448.80 and 28,864.30 is: 43,264.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,347.86 : 99,448.80 = 28,864.30 : x
  2. Step 2: Convert to fraction form
    66,347.86/99,448.80 = 28,864.30/x
  3. Step 3: Cross multiply
    66,347.86x = 99,448.80 × 28,864.30
  4. Step 4: Simplify right side
    66,347.86x = 2,870,519,997.84
  5. Step 5: Solve for x
    x = 2,870,519,997.84/66,347.86
  6. Step 6: Final answer
    x = 43,264.70

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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.