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Finding the Fourth Proportional to 85,747.76, 128,621.64 and 35,800.67

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Solution

The fourth proportional to 85,747.76, 128,621.64 and 35,800.67 is: 53,701.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,747.76 : 128,621.64 = 35,800.67 : x
  2. Step 2: Convert to fraction form
    85,747.76/128,621.64 = 35,800.67/x
  3. Step 3: Cross multiply
    85,747.76x = 128,621.64 × 35,800.67
  4. Step 4: Simplify right side
    85,747.76x = 4,604,740,066.39
  5. Step 5: Solve for x
    x = 4,604,740,066.39/85,747.76
  6. Step 6: Final answer
    x = 53,701.00

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Similar ratio
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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.