Home / 86,022,014.40-129,033,021.60-76,616,164.80

Finding the Fourth Proportional to 86,022,014.40, 129,033,021.60 and 76,616,164.80

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Solution

The fourth proportional to 86,022,014.40, 129,033,021.60 and 76,616,164.80 is: 114,924,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,022,014.40 : 129,033,021.60 = 76,616,164.80 : x
  2. Step 2: Convert to fraction form
    86,022,014.40/129,033,021.60 = 76,616,164.80/x
  3. Step 3: Cross multiply
    86,022,014.40x = 129,033,021.60 × 76,616,164.80
  4. Step 4: Simplify right side
    86,022,014.40x = 9,886,015,247,547,558
  5. Step 5: Solve for x
    x = 9,886,015,247,547,558/86,022,014.40
  6. Step 6: Final answer
    x = 114,924,247.20

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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.