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Finding the Fourth Proportional to 93,880, 129,554.40 and 51,440.05

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Solution

The fourth proportional to 93,880, 129,554.40 and 51,440.05 is: 70,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,880 : 129,554.40 = 51,440.05 : x
  2. Step 2: Convert to fraction form
    93,880/129,554.40 = 51,440.05/x
  3. Step 3: Cross multiply
    93,880x = 129,554.40 × 51,440.05
  4. Step 4: Simplify right side
    93,880x = 6,664,284,813.72
  5. Step 5: Solve for x
    x = 6,664,284,813.72/93,880
  6. Step 6: Final answer
    x = 70,987.27

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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.