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Finding the Fourth Proportional to 65,607.85, 90,536.23 and 38,759.01

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Solution

The fourth proportional to 65,607.85, 90,536.23 and 38,759.01 is: 53,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,607.85 : 90,536.23 = 38,759.01 : x
  2. Step 2: Convert to fraction form
    65,607.85/90,536.23 = 38,759.01/x
  3. Step 3: Cross multiply
    65,607.85x = 90,536.23 × 38,759.01
  4. Step 4: Simplify right side
    65,607.85x = 3,509,094,643.93
  5. Step 5: Solve for x
    x = 3,509,094,643.93/65,607.85
  6. Step 6: Final answer
    x = 53,485.90

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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.