Home / 86,045.12-118,743-48,322.88

Finding the Fourth Proportional to 86,045.12, 118,743 and 48,322.88

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Solution

The fourth proportional to 86,045.12, 118,743 and 48,322.88 is: 66,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,045.12 : 118,743 = 48,322.88 : x
  2. Step 2: Convert to fraction form
    86,045.12/118,743 = 48,322.88/x
  3. Step 3: Cross multiply
    86,045.12x = 118,743 × 48,322.88
  4. Step 4: Simplify right side
    86,045.12x = 5,738,003,739.84
  5. Step 5: Solve for x
    x = 5,738,003,739.84/86,045.12
  6. Step 6: Final answer
    x = 66,685.99

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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.