Home / 56,807.87-78,395.41-31,315.23

Finding the Fourth Proportional to 56,807.87, 78,395.41 and 31,315.23

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Solution

The fourth proportional to 56,807.87, 78,395.41 and 31,315.23 is: 43,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,807.87 : 78,395.41 = 31,315.23 : x
  2. Step 2: Convert to fraction form
    56,807.87/78,395.41 = 31,315.23/x
  3. Step 3: Cross multiply
    56,807.87x = 78,395.41 × 31,315.23
  4. Step 4: Simplify right side
    56,807.87x = 2,454,970,295.09
  5. Step 5: Solve for x
    x = 2,454,970,295.09/56,807.87
  6. Step 6: Final answer
    x = 43,215.32

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1.5x scale

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.