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Finding the Fourth Proportional to 74,678.69, 112,018.28 and 21,370.57

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Solution

The fourth proportional to 74,678.69, 112,018.28 and 21,370.57 is: 32,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,678.69 : 112,018.28 = 21,370.57 : x
  2. Step 2: Convert to fraction form
    74,678.69/112,018.28 = 21,370.57/x
  3. Step 3: Cross multiply
    74,678.69x = 112,018.28 × 21,370.57
  4. Step 4: Simplify right side
    74,678.69x = 2,393,894,107.12
  5. Step 5: Solve for x
    x = 2,393,894,107.12/74,678.69
  6. Step 6: Final answer
    x = 32,055.92

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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.