Home / 78,313.50-117,314.73-38,749.86

Finding the Fourth Proportional to 78,313.50, 117,314.73 and 38,749.86

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Solution

The fourth proportional to 78,313.50, 117,314.73 and 38,749.86 is: 58,047.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.50 : 117,314.73 = 38,749.86 : x
  2. Step 2: Convert to fraction form
    78,313.50/117,314.73 = 38,749.86/x
  3. Step 3: Cross multiply
    78,313.50x = 117,314.73 × 38,749.86
  4. Step 4: Simplify right side
    78,313.50x = 4,545,929,363.44
  5. Step 5: Solve for x
    x = 4,545,929,363.44/78,313.50
  6. Step 6: Final answer
    x = 58,047.84

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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.