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Finding the Fourth Proportional to 65,477.85, 90,357.03 and 40,026.84

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Solution

The fourth proportional to 65,477.85, 90,357.03 and 40,026.84 is: 55,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,477.85 : 90,357.03 = 40,026.84 : x
  2. Step 2: Convert to fraction form
    65,477.85/90,357.03 = 40,026.84/x
  3. Step 3: Cross multiply
    65,477.85x = 90,357.03 × 40,026.84
  4. Step 4: Simplify right side
    65,477.85x = 3,616,706,382.69
  5. Step 5: Solve for x
    x = 3,616,706,382.69/65,477.85
  6. Step 6: Final answer
    x = 55,235.57

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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.