Home / 78,040.16-107,666.32-51,197.52

Finding the Fourth Proportional to 78,040.16, 107,666.32 and 51,197.52

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Solution

The fourth proportional to 78,040.16, 107,666.32 and 51,197.52 is: 70,633.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040.16 : 107,666.32 = 51,197.52 : x
  2. Step 2: Convert to fraction form
    78,040.16/107,666.32 = 51,197.52/x
  3. Step 3: Cross multiply
    78,040.16x = 107,666.32 × 51,197.52
  4. Step 4: Simplify right side
    78,040.16x = 5,512,248,571.53
  5. Step 5: Solve for x
    x = 5,512,248,571.53/78,040.16
  6. Step 6: Final answer
    x = 70,633.49

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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.