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Finding the Fourth Proportional to 66,432,309.80, 99,648,464.70 and 57,344,668.70

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Solution

The fourth proportional to 66,432,309.80, 99,648,464.70 and 57,344,668.70 is: 86,017,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432,309.80 : 99,648,464.70 = 57,344,668.70 : x
  2. Step 2: Convert to fraction form
    66,432,309.80/99,648,464.70 = 57,344,668.70/x
  3. Step 3: Cross multiply
    66,432,309.80x = 99,648,464.70 × 57,344,668.70
  4. Step 4: Simplify right side
    66,432,309.80x = 5,714,308,194,685,145
  5. Step 5: Solve for x
    x = 5,714,308,194,685,145/66,432,309.80
  6. Step 6: Final answer
    x = 86,017,003.05

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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.