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Finding the Fourth Proportional to 65,623.40, 98,435.10 and 21,253.40

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Solution

The fourth proportional to 65,623.40, 98,435.10 and 21,253.40 is: 31,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,623.40 : 98,435.10 = 21,253.40 : x
  2. Step 2: Convert to fraction form
    65,623.40/98,435.10 = 21,253.40/x
  3. Step 3: Cross multiply
    65,623.40x = 98,435.10 × 21,253.40
  4. Step 4: Simplify right side
    65,623.40x = 2,092,080,554.34
  5. Step 5: Solve for x
    x = 2,092,080,554.34/65,623.40
  6. Step 6: Final answer
    x = 31,880.10

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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.