Home / 65,511.18-98,271.63-21,158.82

Finding the Fourth Proportional to 65,511.18, 98,271.63 and 21,158.82

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Solution

The fourth proportional to 65,511.18, 98,271.63 and 21,158.82 is: 31,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,511.18 : 98,271.63 = 21,158.82 : x
  2. Step 2: Convert to fraction form
    65,511.18/98,271.63 = 21,158.82/x
  3. Step 3: Cross multiply
    65,511.18x = 98,271.63 × 21,158.82
  4. Step 4: Simplify right side
    65,511.18x = 2,079,311,730.28
  5. Step 5: Solve for x
    x = 2,079,311,730.28/65,511.18
  6. Step 6: Final answer
    x = 31,739.80

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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.