Home / 76,485.02-105,587.70-47,820.61

Finding the Fourth Proportional to 76,485.02, 105,587.70 and 47,820.61

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Solution

The fourth proportional to 76,485.02, 105,587.70 and 47,820.61 is: 66,016.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,485.02 : 105,587.70 = 47,820.61 : x
  2. Step 2: Convert to fraction form
    76,485.02/105,587.70 = 47,820.61/x
  3. Step 3: Cross multiply
    76,485.02x = 105,587.70 × 47,820.61
  4. Step 4: Simplify right side
    76,485.02x = 5,049,268,222.50
  5. Step 5: Solve for x
    x = 5,049,268,222.50/76,485.02
  6. Step 6: Final answer
    x = 66,016.43

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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.