Home / 77,630.09-107,140.86-43,641.38

Finding the Fourth Proportional to 77,630.09, 107,140.86 and 43,641.38

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Solution

The fourth proportional to 77,630.09, 107,140.86 and 43,641.38 is: 60,231.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,630.09 : 107,140.86 = 43,641.38 : x
  2. Step 2: Convert to fraction form
    77,630.09/107,140.86 = 43,641.38/x
  3. Step 3: Cross multiply
    77,630.09x = 107,140.86 × 43,641.38
  4. Step 4: Simplify right side
    77,630.09x = 4,675,774,984.79
  5. Step 5: Solve for x
    x = 4,675,774,984.79/77,630.09
  6. Step 6: Final answer
    x = 60,231.48

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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.