Home / 65,615.12-98,423.08-21,241.68

Finding the Fourth Proportional to 65,615.12, 98,423.08 and 21,241.68

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Solution

The fourth proportional to 65,615.12, 98,423.08 and 21,241.68 is: 31,862.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,615.12 : 98,423.08 = 21,241.68 : x
  2. Step 2: Convert to fraction form
    65,615.12/98,423.08 = 21,241.68/x
  3. Step 3: Cross multiply
    65,615.12x = 98,423.08 × 21,241.68
  4. Step 4: Simplify right side
    65,615.12x = 2,090,671,569.97
  5. Step 5: Solve for x
    x = 2,090,671,569.97/65,615.12
  6. Step 6: Final answer
    x = 31,862.65

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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.