Home / 86,308,086.40-129,462,129.60-77,648,732.80

Finding the Fourth Proportional to 86,308,086.40, 129,462,129.60 and 77,648,732.80

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Solution

The fourth proportional to 86,308,086.40, 129,462,129.60 and 77,648,732.80 is: 116,473,099.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,308,086.40 : 129,462,129.60 = 77,648,732.80 : x
  2. Step 2: Convert to fraction form
    86,308,086.40/129,462,129.60 = 77,648,732.80/x
  3. Step 3: Cross multiply
    86,308,086.40x = 129,462,129.60 × 77,648,732.80
  4. Step 4: Simplify right side
    86,308,086.40x = 10,052,570,309,029,370
  5. Step 5: Solve for x
    x = 10,052,570,309,029,370/86,308,086.40
  6. Step 6: Final answer
    x = 116,473,099.20

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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.