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Finding the Fourth Proportional to 64,212.60, 96,800.16 and 59,931

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Solution

The fourth proportional to 64,212.60, 96,800.16 and 59,931 is: 90,345.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,212.60 : 96,800.16 = 59,931 : x
  2. Step 2: Convert to fraction form
    64,212.60/96,800.16 = 59,931/x
  3. Step 3: Cross multiply
    64,212.60x = 96,800.16 × 59,931
  4. Step 4: Simplify right side
    64,212.60x = 5,801,330,388.96
  5. Step 5: Solve for x
    x = 5,801,330,388.96/64,212.60
  6. Step 6: Final answer
    x = 90,345.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.