Home / 56,805.09-78,391.58-31,312.44

Finding the Fourth Proportional to 56,805.09, 78,391.58 and 31,312.44

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Solution

The fourth proportional to 56,805.09, 78,391.58 and 31,312.44 is: 43,211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,805.09 : 78,391.58 = 31,312.44 : x
  2. Step 2: Convert to fraction form
    56,805.09/78,391.58 = 31,312.44/x
  3. Step 3: Cross multiply
    56,805.09x = 78,391.58 × 31,312.44
  4. Step 4: Simplify right side
    56,805.09x = 2,454,631,488.69
  5. Step 5: Solve for x
    x = 2,454,631,488.69/56,805.09
  6. Step 6: Final answer
    x = 43,211.47

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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.