Home / 91,621.10-126,428.55-51,326.31

Finding the Fourth Proportional to 91,621.10, 126,428.55 and 51,326.31

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Solution

The fourth proportional to 91,621.10, 126,428.55 and 51,326.31 is: 70,825.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,621.10 : 126,428.55 = 51,326.31 : x
  2. Step 2: Convert to fraction form
    91,621.10/126,428.55 = 51,326.31/x
  3. Step 3: Cross multiply
    91,621.10x = 126,428.55 × 51,326.31
  4. Step 4: Simplify right side
    91,621.10x = 6,489,110,950.15
  5. Step 5: Solve for x
    x = 6,489,110,950.15/91,621.10
  6. Step 6: Final answer
    x = 70,825.51

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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.