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Finding the Fourth Proportional to 66,314,669.60, 99,472,004.40 and 39,374,458.40

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Solution

The fourth proportional to 66,314,669.60, 99,472,004.40 and 39,374,458.40 is: 59,061,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314,669.60 : 99,472,004.40 = 39,374,458.40 : x
  2. Step 2: Convert to fraction form
    66,314,669.60/99,472,004.40 = 39,374,458.40/x
  3. Step 3: Cross multiply
    66,314,669.60x = 99,472,004.40 × 39,374,458.40
  4. Step 4: Simplify right side
    66,314,669.60x = 3,916,656,299,212,417
  5. Step 5: Solve for x
    x = 3,916,656,299,212,417/66,314,669.60
  6. Step 6: Final answer
    x = 59,061,687.60

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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.