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Finding the Fourth Proportional to 65,510.55, 90,408.27 and 49,567.32

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Solution

The fourth proportional to 65,510.55, 90,408.27 and 49,567.32 is: 68,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,510.55 : 90,408.27 = 49,567.32 : x
  2. Step 2: Convert to fraction form
    65,510.55/90,408.27 = 49,567.32/x
  3. Step 3: Cross multiply
    65,510.55x = 90,408.27 × 49,567.32
  4. Step 4: Simplify right side
    65,510.55x = 4,481,295,649.74
  5. Step 5: Solve for x
    x = 4,481,295,649.74/65,510.55
  6. Step 6: Final answer
    x = 68,405.71

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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.