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Finding the Fourth Proportional to 66,089,792.64, 91,203,616.80 and 36,725,905.92

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Solution

The fourth proportional to 66,089,792.64, 91,203,616.80 and 36,725,905.92 is: 50,681,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,089,792.64 : 91,203,616.80 = 36,725,905.92 : x
  2. Step 2: Convert to fraction form
    66,089,792.64/91,203,616.80 = 36,725,905.92/x
  3. Step 3: Cross multiply
    66,089,792.64x = 91,203,616.80 × 36,725,905.92
  4. Step 4: Simplify right side
    66,089,792.64x = 3,349,535,450,160,531.50
  5. Step 5: Solve for x
    x = 3,349,535,450,160,531.50/66,089,792.64
  6. Step 6: Final answer
    x = 50,681,585.10

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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.