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Finding the Fourth Proportional to 64,683.96, 89,263.70 and 36,389.66

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Solution

The fourth proportional to 64,683.96, 89,263.70 and 36,389.66 is: 50,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,683.96 : 89,263.70 = 36,389.66 : x
  2. Step 2: Convert to fraction form
    64,683.96/89,263.70 = 36,389.66/x
  3. Step 3: Cross multiply
    64,683.96x = 89,263.70 × 36,389.66
  4. Step 4: Simplify right side
    64,683.96x = 3,248,275,693.34
  5. Step 5: Solve for x
    x = 3,248,275,693.34/64,683.96
  6. Step 6: Final answer
    x = 50,217.64

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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.