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Finding the Fourth Proportional to 65,862.40, 98,803.88 and 21,478.83

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Solution

The fourth proportional to 65,862.40, 98,803.88 and 21,478.83 is: 32,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,862.40 : 98,803.88 = 21,478.83 : x
  2. Step 2: Convert to fraction form
    65,862.40/98,803.88 = 21,478.83/x
  3. Step 3: Cross multiply
    65,862.40x = 98,803.88 × 21,478.83
  4. Step 4: Simplify right side
    65,862.40x = 2,122,191,247.84
  5. Step 5: Solve for x
    x = 2,122,191,247.84/65,862.40
  6. Step 6: Final answer
    x = 32,221.59

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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.