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Finding the Fourth Proportional to 64,478.92, 88,989.60 and 36,186.16

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Solution

The fourth proportional to 64,478.92, 88,989.60 and 36,186.16 is: 49,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,478.92 : 88,989.60 = 36,186.16 : x
  2. Step 2: Convert to fraction form
    64,478.92/88,989.60 = 36,186.16/x
  3. Step 3: Cross multiply
    64,478.92x = 88,989.60 × 36,186.16
  4. Step 4: Simplify right side
    64,478.92x = 3,220,191,903.94
  5. Step 5: Solve for x
    x = 3,220,191,903.94/64,478.92
  6. Step 6: Final answer
    x = 49,941.78

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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.