Home / 86,015,640.30-129,023,460.45-25,431,366.30

Finding the Fourth Proportional to 86,015,640.30, 129,023,460.45 and 25,431,366.30

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Solution

The fourth proportional to 86,015,640.30, 129,023,460.45 and 25,431,366.30 is: 38,147,049.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,015,640.30 : 129,023,460.45 = 25,431,366.30 : x
  2. Step 2: Convert to fraction form
    86,015,640.30/129,023,460.45 = 25,431,366.30/x
  3. Step 3: Cross multiply
    86,015,640.30x = 129,023,460.45 × 25,431,366.30
  4. Step 4: Simplify right side
    86,015,640.30x = 3,281,242,883,997,513
  5. Step 5: Solve for x
    x = 3,281,242,883,997,513/86,015,640.30
  6. Step 6: Final answer
    x = 38,147,049.45

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1.5x scale

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.