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Finding the Fourth Proportional to 65,303.69, 90,170.89 and 52,515.88

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Solution

The fourth proportional to 65,303.69, 90,170.89 and 52,515.88 is: 72,513.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,303.69 : 90,170.89 = 52,515.88 : x
  2. Step 2: Convert to fraction form
    65,303.69/90,170.89 = 52,515.88/x
  3. Step 3: Cross multiply
    65,303.69x = 90,170.89 × 52,515.88
  4. Step 4: Simplify right side
    65,303.69x = 4,735,403,282.02
  5. Step 5: Solve for x
    x = 4,735,403,282.02/65,303.69
  6. Step 6: Final answer
    x = 72,513.57

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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.