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Finding the Fourth Proportional to 53,312.80, 79,930.80 and 29,946.40

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Solution

The fourth proportional to 53,312.80, 79,930.80 and 29,946.40 is: 44,898.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,312.80 : 79,930.80 = 29,946.40 : x
  2. Step 2: Convert to fraction form
    53,312.80/79,930.80 = 29,946.40/x
  3. Step 3: Cross multiply
    53,312.80x = 79,930.80 × 29,946.40
  4. Step 4: Simplify right side
    53,312.80x = 2,393,639,709.12
  5. Step 5: Solve for x
    x = 2,393,639,709.12/53,312.80
  6. Step 6: Final answer
    x = 44,898.03

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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.