Home / 86,063,138.40-128,920,525.20-53,615,445.60

Finding the Fourth Proportional to 86,063,138.40, 128,920,525.20 and 53,615,445.60

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Solution

The fourth proportional to 86,063,138.40, 128,920,525.20 and 53,615,445.60 is: 80,314,656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,063,138.40 : 128,920,525.20 = 53,615,445.60 : x
  2. Step 2: Convert to fraction form
    86,063,138.40/128,920,525.20 = 53,615,445.60/x
  3. Step 3: Cross multiply
    86,063,138.40x = 128,920,525.20 × 53,615,445.60
  4. Step 4: Simplify right side
    86,063,138.40x = 6,912,131,405,584,029
  5. Step 5: Solve for x
    x = 6,912,131,405,584,029/86,063,138.40
  6. Step 6: Final answer
    x = 80,314,656.59

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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.