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Finding the Fourth Proportional to 56,426.63, 84,678.89 and 19,490.63

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Solution

The fourth proportional to 56,426.63, 84,678.89 and 19,490.63 is: 29,249.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,426.63 : 84,678.89 = 19,490.63 : x
  2. Step 2: Convert to fraction form
    56,426.63/84,678.89 = 19,490.63/x
  3. Step 3: Cross multiply
    56,426.63x = 84,678.89 × 19,490.63
  4. Step 4: Simplify right side
    56,426.63x = 1,650,444,392.95
  5. Step 5: Solve for x
    x = 1,650,444,392.95/56,426.63
  6. Step 6: Final answer
    x = 29,249.39

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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.