Home / 86,248,979.40-129,309,657.30-40,757,629.80

Finding the Fourth Proportional to 86,248,979.40, 129,309,657.30 and 40,757,629.80

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Solution

The fourth proportional to 86,248,979.40, 129,309,657.30 and 40,757,629.80 is: 61,106,289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,248,979.40 : 129,309,657.30 = 40,757,629.80 : x
  2. Step 2: Convert to fraction form
    86,248,979.40/129,309,657.30 = 40,757,629.80/x
  3. Step 3: Cross multiply
    86,248,979.40x = 129,309,657.30 × 40,757,629.80
  4. Step 4: Simplify right side
    86,248,979.40x = 5,270,355,141,798,267
  5. Step 5: Solve for x
    x = 5,270,355,141,798,267/86,248,979.40
  6. Step 6: Final answer
    x = 61,106,289.93

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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.