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Finding the Fourth Proportional to 65,711.80, 98,567.70 and 18,326.80

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Solution

The fourth proportional to 65,711.80, 98,567.70 and 18,326.80 is: 27,490.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,711.80 : 98,567.70 = 18,326.80 : x
  2. Step 2: Convert to fraction form
    65,711.80/98,567.70 = 18,326.80/x
  3. Step 3: Cross multiply
    65,711.80x = 98,567.70 × 18,326.80
  4. Step 4: Simplify right side
    65,711.80x = 1,806,430,524.36
  5. Step 5: Solve for x
    x = 1,806,430,524.36/65,711.80
  6. Step 6: Final answer
    x = 27,490.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.