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Finding the Fourth Proportional to 65,776.61, 90,771.74 and 35,561.93

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Solution

The fourth proportional to 65,776.61, 90,771.74 and 35,561.93 is: 49,075.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,776.61 : 90,771.74 = 35,561.93 : x
  2. Step 2: Convert to fraction form
    65,776.61/90,771.74 = 35,561.93/x
  3. Step 3: Cross multiply
    65,776.61x = 90,771.74 × 35,561.93
  4. Step 4: Simplify right side
    65,776.61x = 3,228,017,898.90
  5. Step 5: Solve for x
    x = 3,228,017,898.90/65,776.61
  6. Step 6: Final answer
    x = 49,075.47

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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.