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Finding the Fourth Proportional to 56,784,802.60, 85,177,203.90 and 18,450,191.80

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Solution

The fourth proportional to 56,784,802.60, 85,177,203.90 and 18,450,191.80 is: 27,675,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,784,802.60 : 85,177,203.90 = 18,450,191.80 : x
  2. Step 2: Convert to fraction form
    56,784,802.60/85,177,203.90 = 18,450,191.80/x
  3. Step 3: Cross multiply
    56,784,802.60x = 85,177,203.90 × 18,450,191.80
  4. Step 4: Simplify right side
    56,784,802.60x = 1,571,535,748,942,708.25
  5. Step 5: Solve for x
    x = 1,571,535,748,942,708.25/56,784,802.60
  6. Step 6: Final answer
    x = 27,675,287.70

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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.