Home / 86,465.04-129,668.40-57,039.36

Finding the Fourth Proportional to 86,465.04, 129,668.40 and 57,039.36

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Solution

The fourth proportional to 86,465.04, 129,668.40 and 57,039.36 is: 85,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,465.04 : 129,668.40 = 57,039.36 : x
  2. Step 2: Convert to fraction form
    86,465.04/129,668.40 = 57,039.36/x
  3. Step 3: Cross multiply
    86,465.04x = 129,668.40 × 57,039.36
  4. Step 4: Simplify right side
    86,465.04x = 7,396,202,548.22
  5. Step 5: Solve for x
    x = 7,396,202,548.22/86,465.04
  6. Step 6: Final answer
    x = 85,539.80

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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.