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Finding the Fourth Proportional to 64,969.28, 97,492.80 and 28,033.28

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Solution

The fourth proportional to 64,969.28, 97,492.80 and 28,033.28 is: 42,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,969.28 : 97,492.80 = 28,033.28 : x
  2. Step 2: Convert to fraction form
    64,969.28/97,492.80 = 28,033.28/x
  3. Step 3: Cross multiply
    64,969.28x = 97,492.80 × 28,033.28
  4. Step 4: Simplify right side
    64,969.28x = 2,733,042,960.38
  5. Step 5: Solve for x
    x = 2,733,042,960.38/64,969.28
  6. Step 6: Final answer
    x = 42,066.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.