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Finding the Fourth Proportional to 64,431.96, 88,894.64 and 38,946.12

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Solution

The fourth proportional to 64,431.96, 88,894.64 and 38,946.12 is: 53,732.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,431.96 : 88,894.64 = 38,946.12 : x
  2. Step 2: Convert to fraction form
    64,431.96/88,894.64 = 38,946.12/x
  3. Step 3: Cross multiply
    64,431.96x = 88,894.64 × 38,946.12
  4. Step 4: Simplify right side
    64,431.96x = 3,462,101,316.80
  5. Step 5: Solve for x
    x = 3,462,101,316.80/64,431.96
  6. Step 6: Final answer
    x = 53,732.67

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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.