Home / 56,128,399.75-84,192,599.69-13,578,127.75

Finding the Fourth Proportional to 56,128,399.75, 84,192,599.69 and 13,578,127.75

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Solution

The fourth proportional to 56,128,399.75, 84,192,599.69 and 13,578,127.75 is: 20,367,191.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,128,399.75 : 84,192,599.69 = 13,578,127.75 : x
  2. Step 2: Convert to fraction form
    56,128,399.75/84,192,599.69 = 13,578,127.75/x
  3. Step 3: Cross multiply
    56,128,399.75x = 84,192,599.69 × 13,578,127.75
  4. Step 4: Simplify right side
    56,128,399.75x = 1,143,177,874,195,430.25
  5. Step 5: Solve for x
    x = 1,143,177,874,195,430.25/56,128,399.75
  6. Step 6: Final answer
    x = 20,367,191.64

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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.