Home / 56,629-78,149.64-31,480.12

Finding the Fourth Proportional to 56,629, 78,149.64 and 31,480.12

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Solution

The fourth proportional to 56,629, 78,149.64 and 31,480.12 is: 43,443.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,629 : 78,149.64 = 31,480.12 : x
  2. Step 2: Convert to fraction form
    56,629/78,149.64 = 31,480.12/x
  3. Step 3: Cross multiply
    56,629x = 78,149.64 × 31,480.12
  4. Step 4: Simplify right side
    56,629x = 2,460,160,045.16
  5. Step 5: Solve for x
    x = 2,460,160,045.16/56,629
  6. Step 6: Final answer
    x = 43,443.47

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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.