Home / 78,031.62-107,683.29-42,222.26

Finding the Fourth Proportional to 78,031.62, 107,683.29 and 42,222.26

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Solution

The fourth proportional to 78,031.62, 107,683.29 and 42,222.26 is: 58,266.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,031.62 : 107,683.29 = 42,222.26 : x
  2. Step 2: Convert to fraction form
    78,031.62/107,683.29 = 42,222.26/x
  3. Step 3: Cross multiply
    78,031.62x = 107,683.29 × 42,222.26
  4. Step 4: Simplify right side
    78,031.62x = 4,546,632,137.24
  5. Step 5: Solve for x
    x = 4,546,632,137.24/78,031.62
  6. Step 6: Final answer
    x = 58,266.54

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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.