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Finding the Fourth Proportional to 64,368, 88,820.64 and 36,069.60

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Solution

The fourth proportional to 64,368, 88,820.64 and 36,069.60 is: 49,772.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,368 : 88,820.64 = 36,069.60 : x
  2. Step 2: Convert to fraction form
    64,368/88,820.64 = 36,069.60/x
  3. Step 3: Cross multiply
    64,368x = 88,820.64 × 36,069.60
  4. Step 4: Simplify right side
    64,368x = 3,203,724,956.54
  5. Step 5: Solve for x
    x = 3,203,724,956.54/64,368
  6. Step 6: Final answer
    x = 49,772.01

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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.