Home / 78,589.26-108,455.63-42,781.67

Finding the Fourth Proportional to 78,589.26, 108,455.63 and 42,781.67

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Solution

The fourth proportional to 78,589.26, 108,455.63 and 42,781.67 is: 59,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589.26 : 108,455.63 = 42,781.67 : x
  2. Step 2: Convert to fraction form
    78,589.26/108,455.63 = 42,781.67/x
  3. Step 3: Cross multiply
    78,589.26x = 108,455.63 × 42,781.67
  4. Step 4: Simplify right side
    78,589.26x = 4,639,912,216.12
  5. Step 5: Solve for x
    x = 4,639,912,216.12/78,589.26
  6. Step 6: Final answer
    x = 59,040.03

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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.