Home / 70,132.16-96,779.94-39,915.20

Finding the Fourth Proportional to 70,132.16, 96,779.94 and 39,915.20

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Solution

The fourth proportional to 70,132.16, 96,779.94 and 39,915.20 is: 55,081.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,132.16 : 96,779.94 = 39,915.20 : x
  2. Step 2: Convert to fraction form
    70,132.16/96,779.94 = 39,915.20/x
  3. Step 3: Cross multiply
    70,132.16x = 96,779.94 × 39,915.20
  4. Step 4: Simplify right side
    70,132.16x = 3,862,990,661.09
  5. Step 5: Solve for x
    x = 3,862,990,661.09/70,132.16
  6. Step 6: Final answer
    x = 55,081.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.