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Finding the Fourth Proportional to 65,635.83, 90,525.74 and 49,557.15

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Solution

The fourth proportional to 65,635.83, 90,525.74 and 49,557.15 is: 68,349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,635.83 : 90,525.74 = 49,557.15 : x
  2. Step 2: Convert to fraction form
    65,635.83/90,525.74 = 49,557.15/x
  3. Step 3: Cross multiply
    65,635.83x = 90,525.74 × 49,557.15
  4. Step 4: Simplify right side
    65,635.83x = 4,486,197,428.26
  5. Step 5: Solve for x
    x = 4,486,197,428.26/65,635.83
  6. Step 6: Final answer
    x = 68,349.82

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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.