Home / 86,099.12-129,079.56-48,636.08

Finding the Fourth Proportional to 86,099.12, 129,079.56 and 48,636.08

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Solution

The fourth proportional to 86,099.12, 129,079.56 and 48,636.08 is: 72,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,099.12 : 129,079.56 = 48,636.08 : x
  2. Step 2: Convert to fraction form
    86,099.12/129,079.56 = 48,636.08/x
  3. Step 3: Cross multiply
    86,099.12x = 129,079.56 × 48,636.08
  4. Step 4: Simplify right side
    86,099.12x = 6,277,923,806.52
  5. Step 5: Solve for x
    x = 6,277,923,806.52/86,099.12
  6. Step 6: Final answer
    x = 72,915.08

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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.