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Finding the Fourth Proportional to 65,794.58, 90,689.88 and 51,429.03

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Solution

The fourth proportional to 65,794.58, 90,689.88 and 51,429.03 is: 70,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,794.58 : 90,689.88 = 51,429.03 : x
  2. Step 2: Convert to fraction form
    65,794.58/90,689.88 = 51,429.03/x
  3. Step 3: Cross multiply
    65,794.58x = 90,689.88 × 51,429.03
  4. Step 4: Simplify right side
    65,794.58x = 4,664,092,122.70
  5. Step 5: Solve for x
    x = 4,664,092,122.70/65,794.58
  6. Step 6: Final answer
    x = 70,888.70

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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.