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Finding the Fourth Proportional to 85,313.16, 117,764.28 and 73,328.40

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Solution

The fourth proportional to 85,313.16, 117,764.28 and 73,328.40 is: 101,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,313.16 : 117,764.28 = 73,328.40 : x
  2. Step 2: Convert to fraction form
    85,313.16/117,764.28 = 73,328.40/x
  3. Step 3: Cross multiply
    85,313.16x = 117,764.28 × 73,328.40
  4. Step 4: Simplify right side
    85,313.16x = 8,635,466,229.55
  5. Step 5: Solve for x
    x = 8,635,466,229.55/85,313.16
  6. Step 6: Final answer
    x = 101,220.80

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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.