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Finding the Fourth Proportional to 65,700.15, 90,559.68 and 51,334.92

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Solution

The fourth proportional to 65,700.15, 90,559.68 and 51,334.92 is: 70,758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,700.15 : 90,559.68 = 51,334.92 : x
  2. Step 2: Convert to fraction form
    65,700.15/90,559.68 = 51,334.92/x
  3. Step 3: Cross multiply
    65,700.15x = 90,559.68 × 51,334.92
  4. Step 4: Simplify right side
    65,700.15x = 4,648,873,928.03
  5. Step 5: Solve for x
    x = 4,648,873,928.03/65,700.15
  6. Step 6: Final answer
    x = 70,758.95

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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.