Home / 86,232,128.40-129,366,163.80-28,742,259.60

Finding the Fourth Proportional to 86,232,128.40, 129,366,163.80 and 28,742,259.60

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Solution

The fourth proportional to 86,232,128.40, 129,366,163.80 and 28,742,259.60 is: 43,119,379.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,232,128.40 : 129,366,163.80 = 28,742,259.60 : x
  2. Step 2: Convert to fraction form
    86,232,128.40/129,366,163.80 = 28,742,259.60/x
  3. Step 3: Cross multiply
    86,232,128.40x = 129,366,163.80 × 28,742,259.60
  4. Step 4: Simplify right side
    86,232,128.40x = 3,718,275,863,395,722.50
  5. Step 5: Solve for x
    x = 3,718,275,863,395,722.50/86,232,128.40
  6. Step 6: Final answer
    x = 43,119,379.43

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.