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Finding the Fourth Proportional to 85,071.96, 127,636.56 and 37,680.48

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Solution

The fourth proportional to 85,071.96, 127,636.56 and 37,680.48 is: 56,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,071.96 : 127,636.56 = 37,680.48 : x
  2. Step 2: Convert to fraction form
    85,071.96/127,636.56 = 37,680.48/x
  3. Step 3: Cross multiply
    85,071.96x = 127,636.56 × 37,680.48
  4. Step 4: Simplify right side
    85,071.96x = 4,809,406,846.35
  5. Step 5: Solve for x
    x = 4,809,406,846.35/85,071.96
  6. Step 6: Final answer
    x = 56,533.40

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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.