Home / 86,016,086.40-129,024,129.60-69,891,772.80

Finding the Fourth Proportional to 86,016,086.40, 129,024,129.60 and 69,891,772.80

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Solution

The fourth proportional to 86,016,086.40, 129,024,129.60 and 69,891,772.80 is: 104,837,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,016,086.40 : 129,024,129.60 = 69,891,772.80 : x
  2. Step 2: Convert to fraction form
    86,016,086.40/129,024,129.60 = 69,891,772.80/x
  3. Step 3: Cross multiply
    86,016,086.40x = 129,024,129.60 × 69,891,772.80
  4. Step 4: Simplify right side
    86,016,086.40x = 9,017,725,151,720,954
  5. Step 5: Solve for x
    x = 9,017,725,151,720,954/86,016,086.40
  6. Step 6: Final answer
    x = 104,837,659.20

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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.