Home / 56,767.78-78,309.80-43,315.72

Finding the Fourth Proportional to 56,767.78, 78,309.80 and 43,315.72

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Solution

The fourth proportional to 56,767.78, 78,309.80 and 43,315.72 is: 59,753.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,767.78 : 78,309.80 = 43,315.72 : x
  2. Step 2: Convert to fraction form
    56,767.78/78,309.80 = 43,315.72/x
  3. Step 3: Cross multiply
    56,767.78x = 78,309.80 × 43,315.72
  4. Step 4: Simplify right side
    56,767.78x = 3,392,045,370.06
  5. Step 5: Solve for x
    x = 3,392,045,370.06/56,767.78
  6. Step 6: Final answer
    x = 59,753.00

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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.