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Finding the Fourth Proportional to 53,988.70, 74,503.90 and 29,789.88

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Solution

The fourth proportional to 53,988.70, 74,503.90 and 29,789.88 is: 41,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,988.70 : 74,503.90 = 29,789.88 : x
  2. Step 2: Convert to fraction form
    53,988.70/74,503.90 = 29,789.88/x
  3. Step 3: Cross multiply
    53,988.70x = 74,503.90 × 29,789.88
  4. Step 4: Simplify right side
    53,988.70x = 2,219,462,240.53
  5. Step 5: Solve for x
    x = 2,219,462,240.53/53,988.70
  6. Step 6: Final answer
    x = 41,109.76

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1.5x scale

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.