Home / 65,686.36-98,543.91-21,317.57

Finding the Fourth Proportional to 65,686.36, 98,543.91 and 21,317.57

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Solution

The fourth proportional to 65,686.36, 98,543.91 and 21,317.57 is: 31,981.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,686.36 : 98,543.91 = 21,317.57 : x
  2. Step 2: Convert to fraction form
    65,686.36/98,543.91 = 21,317.57/x
  3. Step 3: Cross multiply
    65,686.36x = 98,543.91 × 21,317.57
  4. Step 4: Simplify right side
    65,686.36x = 2,100,716,699.50
  5. Step 5: Solve for x
    x = 2,100,716,699.50/65,686.36
  6. Step 6: Final answer
    x = 31,981.02

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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.