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Finding the Fourth Proportional to 85,244.67, 117,613.89 and 55,031.40

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Solution

The fourth proportional to 85,244.67, 117,613.89 and 55,031.40 is: 75,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,244.67 : 117,613.89 = 55,031.40 : x
  2. Step 2: Convert to fraction form
    85,244.67/117,613.89 = 55,031.40/x
  3. Step 3: Cross multiply
    85,244.67x = 117,613.89 × 55,031.40
  4. Step 4: Simplify right side
    85,244.67x = 6,472,457,026.15
  5. Step 5: Solve for x
    x = 6,472,457,026.15/85,244.67
  6. Step 6: Final answer
    x = 75,928.00

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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.