Home / 77,939.94-107,531.60-47,693.72

Finding the Fourth Proportional to 77,939.94, 107,531.60 and 47,693.72

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Solution

The fourth proportional to 77,939.94, 107,531.60 and 47,693.72 is: 65,801.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,939.94 : 107,531.60 = 47,693.72 : x
  2. Step 2: Convert to fraction form
    77,939.94/107,531.60 = 47,693.72/x
  3. Step 3: Cross multiply
    77,939.94x = 107,531.60 × 47,693.72
  4. Step 4: Simplify right side
    77,939.94x = 5,128,582,021.55
  5. Step 5: Solve for x
    x = 5,128,582,021.55/77,939.94
  6. Step 6: Final answer
    x = 65,801.72

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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.