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Finding the Fourth Proportional to 65,673.40, 90,567.78 and 52,288.84

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Solution

The fourth proportional to 65,673.40, 90,567.78 and 52,288.84 is: 72,109.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,673.40 : 90,567.78 = 52,288.84 : x
  2. Step 2: Convert to fraction form
    65,673.40/90,567.78 = 52,288.84/x
  3. Step 3: Cross multiply
    65,673.40x = 90,567.78 × 52,288.84
  4. Step 4: Simplify right side
    65,673.40x = 4,735,684,157.58
  5. Step 5: Solve for x
    x = 4,735,684,157.58/65,673.40
  6. Step 6: Final answer
    x = 72,109.62

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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.