Home / 55,190.07-76,160.18-31,315.32

Finding the Fourth Proportional to 55,190.07, 76,160.18 and 31,315.32

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Solution

The fourth proportional to 55,190.07, 76,160.18 and 31,315.32 is: 43,213.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,190.07 : 76,160.18 = 31,315.32 : x
  2. Step 2: Convert to fraction form
    55,190.07/76,160.18 = 31,315.32/x
  3. Step 3: Cross multiply
    55,190.07x = 76,160.18 × 31,315.32
  4. Step 4: Simplify right side
    55,190.07x = 2,384,980,486.25
  5. Step 5: Solve for x
    x = 2,384,980,486.25/55,190.07
  6. Step 6: Final answer
    x = 43,213.94

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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.