Home / 68,087,128.80-102,205,342.80-42,556,965.60

Finding the Fourth Proportional to 68,087,128.80, 102,205,342.80 and 42,556,965.60

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Solution

The fourth proportional to 68,087,128.80, 102,205,342.80 and 42,556,965.60 is: 63,882,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,087,128.80 : 102,205,342.80 = 42,556,965.60 : x
  2. Step 2: Convert to fraction form
    68,087,128.80/102,205,342.80 = 42,556,965.60/x
  3. Step 3: Cross multiply
    68,087,128.80x = 102,205,342.80 × 42,556,965.60
  4. Step 4: Simplify right side
    68,087,128.80x = 4,349,549,257,675,807.50
  5. Step 5: Solve for x
    x = 4,349,549,257,675,807.50/68,087,128.80
  6. Step 6: Final answer
    x = 63,882,107.15

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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.