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Finding the Fourth Proportional to 65,342.70, 90,193.23 and 51,937.74

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Solution

The fourth proportional to 65,342.70, 90,193.23 and 51,937.74 is: 71,690.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,342.70 : 90,193.23 = 51,937.74 : x
  2. Step 2: Convert to fraction form
    65,342.70/90,193.23 = 51,937.74/x
  3. Step 3: Cross multiply
    65,342.70x = 90,193.23 × 51,937.74
  4. Step 4: Simplify right side
    65,342.70x = 4,684,432,529.50
  5. Step 5: Solve for x
    x = 4,684,432,529.50/65,342.70
  6. Step 6: Final answer
    x = 71,690.22

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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.