Home / 65,779.12-98,669.60-21,406.12

Finding the Fourth Proportional to 65,779.12, 98,669.60 and 21,406.12

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Solution

The fourth proportional to 65,779.12, 98,669.60 and 21,406.12 is: 32,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,779.12 : 98,669.60 = 21,406.12 : x
  2. Step 2: Convert to fraction form
    65,779.12/98,669.60 = 21,406.12/x
  3. Step 3: Cross multiply
    65,779.12x = 98,669.60 × 21,406.12
  4. Step 4: Simplify right side
    65,779.12x = 2,112,133,297.95
  5. Step 5: Solve for x
    x = 2,112,133,297.95/65,779.12
  6. Step 6: Final answer
    x = 32,109.48

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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.