Home / 56,708.16-78,255.36-31,557.12

Finding the Fourth Proportional to 56,708.16, 78,255.36 and 31,557.12

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Solution

The fourth proportional to 56,708.16, 78,255.36 and 31,557.12 is: 43,547.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,708.16 : 78,255.36 = 31,557.12 : x
  2. Step 2: Convert to fraction form
    56,708.16/78,255.36 = 31,557.12/x
  3. Step 3: Cross multiply
    56,708.16x = 78,255.36 × 31,557.12
  4. Step 4: Simplify right side
    56,708.16x = 2,469,513,786.16
  5. Step 5: Solve for x
    x = 2,469,513,786.16/56,708.16
  6. Step 6: Final answer
    x = 43,547.77

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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.