Home / 78,040.26-107,695.58-42,230.16

Finding the Fourth Proportional to 78,040.26, 107,695.58 and 42,230.16

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Solution

The fourth proportional to 78,040.26, 107,695.58 and 42,230.16 is: 58,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040.26 : 107,695.58 = 42,230.16 : x
  2. Step 2: Convert to fraction form
    78,040.26/107,695.58 = 42,230.16/x
  3. Step 3: Cross multiply
    78,040.26x = 107,695.58 × 42,230.16
  4. Step 4: Simplify right side
    78,040.26x = 4,548,001,363.54
  5. Step 5: Solve for x
    x = 4,548,001,363.54/78,040.26
  6. Step 6: Final answer
    x = 58,277.63

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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.