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Finding the Fourth Proportional to 65,506.20, 98,259.30 and 21,134.40

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Solution

The fourth proportional to 65,506.20, 98,259.30 and 21,134.40 is: 31,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,506.20 : 98,259.30 = 21,134.40 : x
  2. Step 2: Convert to fraction form
    65,506.20/98,259.30 = 21,134.40/x
  3. Step 3: Cross multiply
    65,506.20x = 98,259.30 × 21,134.40
  4. Step 4: Simplify right side
    65,506.20x = 2,076,651,349.92
  5. Step 5: Solve for x
    x = 2,076,651,349.92/65,506.20
  6. Step 6: Final answer
    x = 31,701.60

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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.