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Finding the Fourth Proportional to 69,870.78, 104,807.08 and 19,950.84

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Solution

The fourth proportional to 69,870.78, 104,807.08 and 19,950.84 is: 29,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,870.78 : 104,807.08 = 19,950.84 : x
  2. Step 2: Convert to fraction form
    69,870.78/104,807.08 = 19,950.84/x
  3. Step 3: Cross multiply
    69,870.78x = 104,807.08 × 19,950.84
  4. Step 4: Simplify right side
    69,870.78x = 2,090,989,283.95
  5. Step 5: Solve for x
    x = 2,090,989,283.95/69,870.78
  6. Step 6: Final answer
    x = 29,926.52

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1.5x scale

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.