Home / 86,911,943.20-130,383,661.20-43,672,328.80

Finding the Fourth Proportional to 86,911,943.20, 130,383,661.20 and 43,672,328.80

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Solution

The fourth proportional to 86,911,943.20, 130,383,661.20 and 43,672,328.80 is: 65,516,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,911,943.20 : 130,383,661.20 = 43,672,328.80 : x
  2. Step 2: Convert to fraction form
    86,911,943.20/130,383,661.20 = 43,672,328.80/x
  3. Step 3: Cross multiply
    86,911,943.20x = 130,383,661.20 × 43,672,328.80
  4. Step 4: Simplify right side
    86,911,943.20x = 5,694,158,122,074,202
  5. Step 5: Solve for x
    x = 5,694,158,122,074,202/86,911,943.20
  6. Step 6: Final answer
    x = 65,516,405.60

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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.