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Finding the Fourth Proportional to 56,365.70, 84,558.30 and 18,929.40

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Solution

The fourth proportional to 56,365.70, 84,558.30 and 18,929.40 is: 28,397.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,365.70 : 84,558.30 = 18,929.40 : x
  2. Step 2: Convert to fraction form
    56,365.70/84,558.30 = 18,929.40/x
  3. Step 3: Cross multiply
    56,365.70x = 84,558.30 × 18,929.40
  4. Step 4: Simplify right side
    56,365.70x = 1,600,637,884.02
  5. Step 5: Solve for x
    x = 1,600,637,884.02/56,365.70
  6. Step 6: Final answer
    x = 28,397.37

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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.