Home / 76,915.68-115,294.32-55,803.12

Finding the Fourth Proportional to 76,915.68, 115,294.32 and 55,803.12

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Solution

The fourth proportional to 76,915.68, 115,294.32 and 55,803.12 is: 83,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,915.68 : 115,294.32 = 55,803.12 : x
  2. Step 2: Convert to fraction form
    76,915.68/115,294.32 = 55,803.12/x
  3. Step 3: Cross multiply
    76,915.68x = 115,294.32 × 55,803.12
  4. Step 4: Simplify right side
    76,915.68x = 6,433,782,774.28
  5. Step 5: Solve for x
    x = 6,433,782,774.28/76,915.68
  6. Step 6: Final answer
    x = 83,647.22

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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.