Home / 71,433.60-98,558.40-56,279.28

Finding the Fourth Proportional to 71,433.60, 98,558.40 and 56,279.28

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Solution

The fourth proportional to 71,433.60, 98,558.40 and 56,279.28 is: 77,649.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,433.60 : 98,558.40 = 56,279.28 : x
  2. Step 2: Convert to fraction form
    71,433.60/98,558.40 = 56,279.28/x
  3. Step 3: Cross multiply
    71,433.60x = 98,558.40 × 56,279.28
  4. Step 4: Simplify right side
    71,433.60x = 5,546,795,789.95
  5. Step 5: Solve for x
    x = 5,546,795,789.95/71,433.60
  6. Step 6: Final answer
    x = 77,649.67

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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.