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Finding the Fourth Proportional to 85,680.70, 128,604.07 and 41,338.63

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Solution

The fourth proportional to 85,680.70, 128,604.07 and 41,338.63 is: 62,048.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680.70 : 128,604.07 = 41,338.63 : x
  2. Step 2: Convert to fraction form
    85,680.70/128,604.07 = 41,338.63/x
  3. Step 3: Cross multiply
    85,680.70x = 128,604.07 × 41,338.63
  4. Step 4: Simplify right side
    85,680.70x = 5,316,316,066.22
  5. Step 5: Solve for x
    x = 5,316,316,066.22/85,680.70
  6. Step 6: Final answer
    x = 62,048.00

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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.