Home / 86,047.38-129,071.07-30,643.38

Finding the Fourth Proportional to 86,047.38, 129,071.07 and 30,643.38

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Solution

The fourth proportional to 86,047.38, 129,071.07 and 30,643.38 is: 45,965.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,047.38 : 129,071.07 = 30,643.38 : x
  2. Step 2: Convert to fraction form
    86,047.38/129,071.07 = 30,643.38/x
  3. Step 3: Cross multiply
    86,047.38x = 129,071.07 × 30,643.38
  4. Step 4: Simplify right side
    86,047.38x = 3,955,173,845.02
  5. Step 5: Solve for x
    x = 3,955,173,845.02/86,047.38
  6. Step 6: Final answer
    x = 45,965.07

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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.