Home / 78,433.38-117,650.40-19,269.06

Finding the Fourth Proportional to 78,433.38, 117,650.40 and 19,269.06

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Solution

The fourth proportional to 78,433.38, 117,650.40 and 19,269.06 is: 28,903.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,433.38 : 117,650.40 = 19,269.06 : x
  2. Step 2: Convert to fraction form
    78,433.38/117,650.40 = 19,269.06/x
  3. Step 3: Cross multiply
    78,433.38x = 117,650.40 × 19,269.06
  4. Step 4: Simplify right side
    78,433.38x = 2,267,012,616.62
  5. Step 5: Solve for x
    x = 2,267,012,616.62/78,433.38
  6. Step 6: Final answer
    x = 28,903.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.