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Finding the Fourth Proportional to 65,937.87, 98,903.70 and 21,558.78

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Solution

The fourth proportional to 65,937.87, 98,903.70 and 21,558.78 is: 32,337.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,937.87 : 98,903.70 = 21,558.78 : x
  2. Step 2: Convert to fraction form
    65,937.87/98,903.70 = 21,558.78/x
  3. Step 3: Cross multiply
    65,937.87x = 98,903.70 × 21,558.78
  4. Step 4: Simplify right side
    65,937.87x = 2,132,243,109.49
  5. Step 5: Solve for x
    x = 2,132,243,109.49/65,937.87
  6. Step 6: Final answer
    x = 32,337.15

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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.