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Finding the Fourth Proportional to 65,611.76, 90,549.24 and 37,315.76

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Solution

The fourth proportional to 65,611.76, 90,549.24 and 37,315.76 is: 51,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,611.76 : 90,549.24 = 37,315.76 : x
  2. Step 2: Convert to fraction form
    65,611.76/90,549.24 = 37,315.76/x
  3. Step 3: Cross multiply
    65,611.76x = 90,549.24 × 37,315.76
  4. Step 4: Simplify right side
    65,611.76x = 3,378,913,708.02
  5. Step 5: Solve for x
    x = 3,378,913,708.02/65,611.76
  6. Step 6: Final answer
    x = 51,498.60

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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.