Home / 56,072.09-77,378.51-30,578.66

Finding the Fourth Proportional to 56,072.09, 77,378.51 and 30,578.66

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Solution

The fourth proportional to 56,072.09, 77,378.51 and 30,578.66 is: 42,198.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,072.09 : 77,378.51 = 30,578.66 : x
  2. Step 2: Convert to fraction form
    56,072.09/77,378.51 = 30,578.66/x
  3. Step 3: Cross multiply
    56,072.09x = 77,378.51 × 30,578.66
  4. Step 4: Simplify right side
    56,072.09x = 2,366,130,838.15
  5. Step 5: Solve for x
    x = 2,366,130,838.15/56,072.09
  6. Step 6: Final answer
    x = 42,198.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.