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Finding the Fourth Proportional to 85,125.78, 127,599.94 and 47,630.88

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Solution

The fourth proportional to 85,125.78, 127,599.94 and 47,630.88 is: 71,396.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,125.78 : 127,599.94 = 47,630.88 : x
  2. Step 2: Convert to fraction form
    85,125.78/127,599.94 = 47,630.88/x
  3. Step 3: Cross multiply
    85,125.78x = 127,599.94 × 47,630.88
  4. Step 4: Simplify right side
    85,125.78x = 6,077,697,430.15
  5. Step 5: Solve for x
    x = 6,077,697,430.15/85,125.78
  6. Step 6: Final answer
    x = 71,396.67

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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.