Home / 55,187.95-76,157.11-31,314.12

Finding the Fourth Proportional to 55,187.95, 76,157.11 and 31,314.12

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Solution

The fourth proportional to 55,187.95, 76,157.11 and 31,314.12 is: 43,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,187.95 : 76,157.11 = 31,314.12 : x
  2. Step 2: Convert to fraction form
    55,187.95/76,157.11 = 31,314.12/x
  3. Step 3: Cross multiply
    55,187.95x = 76,157.11 × 31,314.12
  4. Step 4: Simplify right side
    55,187.95x = 2,384,792,881.39
  5. Step 5: Solve for x
    x = 2,384,792,881.39/55,187.95
  6. Step 6: Final answer
    x = 43,212.20

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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.