Home / 78,232.32-107,958.69-42,421.41

Finding the Fourth Proportional to 78,232.32, 107,958.69 and 42,421.41

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Solution

The fourth proportional to 78,232.32, 107,958.69 and 42,421.41 is: 58,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,232.32 : 107,958.69 = 42,421.41 : x
  2. Step 2: Convert to fraction form
    78,232.32/107,958.69 = 42,421.41/x
  3. Step 3: Cross multiply
    78,232.32x = 107,958.69 × 42,421.41
  4. Step 4: Simplify right side
    78,232.32x = 4,579,759,851.55
  5. Step 5: Solve for x
    x = 4,579,759,851.55/78,232.32
  6. Step 6: Final answer
    x = 58,540.51

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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.