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Finding the Fourth Proportional to 74,950.65, 103,384.32 and 57,006.32

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Solution

The fourth proportional to 74,950.65, 103,384.32 and 57,006.32 is: 78,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,950.65 : 103,384.32 = 57,006.32 : x
  2. Step 2: Convert to fraction form
    74,950.65/103,384.32 = 57,006.32/x
  3. Step 3: Cross multiply
    74,950.65x = 103,384.32 × 57,006.32
  4. Step 4: Simplify right side
    74,950.65x = 5,893,559,111.98
  5. Step 5: Solve for x
    x = 5,893,559,111.98/74,950.65
  6. Step 6: Final answer
    x = 78,632.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.