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Finding the Fourth Proportional to 55,223,573.60, 82,835,360.40 and 18,873,009.20

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Solution

The fourth proportional to 55,223,573.60, 82,835,360.40 and 18,873,009.20 is: 28,309,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,223,573.60 : 82,835,360.40 = 18,873,009.20 : x
  2. Step 2: Convert to fraction form
    55,223,573.60/82,835,360.40 = 18,873,009.20/x
  3. Step 3: Cross multiply
    55,223,573.60x = 82,835,360.40 × 18,873,009.20
  4. Step 4: Simplify right side
    55,223,573.60x = 1,563,352,518,914,515.75
  5. Step 5: Solve for x
    x = 1,563,352,518,914,515.75/55,223,573.60
  6. Step 6: Final answer
    x = 28,309,513.80

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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.