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Finding the Fourth Proportional to 78,563.88, 117,853.50 and 36,999.72

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Solution

The fourth proportional to 78,563.88, 117,853.50 and 36,999.72 is: 55,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.88 : 117,853.50 = 36,999.72 : x
  2. Step 2: Convert to fraction form
    78,563.88/117,853.50 = 36,999.72/x
  3. Step 3: Cross multiply
    78,563.88x = 117,853.50 × 36,999.72
  4. Step 4: Simplify right side
    78,563.88x = 4,360,546,501.02
  5. Step 5: Solve for x
    x = 4,360,546,501.02/78,563.88
  6. Step 6: Final answer
    x = 55,503.20

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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.