Home / 85,428.02-117,888.26-47,186.80

Finding the Fourth Proportional to 85,428.02, 117,888.26 and 47,186.80

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Solution

The fourth proportional to 85,428.02, 117,888.26 and 47,186.80 is: 65,116.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,428.02 : 117,888.26 = 47,186.80 : x
  2. Step 2: Convert to fraction form
    85,428.02/117,888.26 = 47,186.80/x
  3. Step 3: Cross multiply
    85,428.02x = 117,888.26 × 47,186.80
  4. Step 4: Simplify right side
    85,428.02x = 5,562,770,144.86
  5. Step 5: Solve for x
    x = 5,562,770,144.86/85,428.02
  6. Step 6: Final answer
    x = 65,116.46

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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.