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Finding the Fourth Proportional to 66,409,202.34, 91,645,017.51 and 36,639,848.88

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Solution

The fourth proportional to 66,409,202.34, 91,645,017.51 and 36,639,848.88 is: 50,563,167.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,409,202.34 : 91,645,017.51 = 36,639,848.88 : x
  2. Step 2: Convert to fraction form
    66,409,202.34/91,645,017.51 = 36,639,848.88/x
  3. Step 3: Cross multiply
    66,409,202.34x = 91,645,017.51 × 36,639,848.88
  4. Step 4: Simplify right side
    66,409,202.34x = 3,357,859,592,171,354.50
  5. Step 5: Solve for x
    x = 3,357,859,592,171,354.50/66,409,202.34
  6. Step 6: Final answer
    x = 50,563,167.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.