Home / 76,794.02-105,984.40-42,805.60

Finding the Fourth Proportional to 76,794.02, 105,984.40 and 42,805.60

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Solution

The fourth proportional to 76,794.02, 105,984.40 and 42,805.60 is: 59,076.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,794.02 : 105,984.40 = 42,805.60 : x
  2. Step 2: Convert to fraction form
    76,794.02/105,984.40 = 42,805.60/x
  3. Step 3: Cross multiply
    76,794.02x = 105,984.40 × 42,805.60
  4. Step 4: Simplify right side
    76,794.02x = 4,536,725,832.64
  5. Step 5: Solve for x
    x = 4,536,725,832.64/76,794.02
  6. Step 6: Final answer
    x = 59,076.55

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1.5x scale

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.