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Finding the Fourth Proportional to 52,112,978.80, 78,169,468.20 and 43,752,223.60

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Solution

The fourth proportional to 52,112,978.80, 78,169,468.20 and 43,752,223.60 is: 65,628,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,112,978.80 : 78,169,468.20 = 43,752,223.60 : x
  2. Step 2: Convert to fraction form
    52,112,978.80/78,169,468.20 = 43,752,223.60/x
  3. Step 3: Cross multiply
    52,112,978.80x = 78,169,468.20 × 43,752,223.60
  4. Step 4: Simplify right side
    52,112,978.80x = 3,420,088,051,379,490
  5. Step 5: Solve for x
    x = 3,420,088,051,379,490/52,112,978.80
  6. Step 6: Final answer
    x = 65,628,335.40

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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.