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Finding the Fourth Proportional to 53,894.40, 80,835.90 and 14,455.50

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Solution

The fourth proportional to 53,894.40, 80,835.90 and 14,455.50 is: 21,681.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,894.40 : 80,835.90 = 14,455.50 : x
  2. Step 2: Convert to fraction form
    53,894.40/80,835.90 = 14,455.50/x
  3. Step 3: Cross multiply
    53,894.40x = 80,835.90 × 14,455.50
  4. Step 4: Simplify right side
    53,894.40x = 1,168,523,352.45
  5. Step 5: Solve for x
    x = 1,168,523,352.45/53,894.40
  6. Step 6: Final answer
    x = 21,681.72

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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.