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Finding the Fourth Proportional to 103,887.79, 156,113.07 and 56,537.89

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Solution

The fourth proportional to 103,887.79, 156,113.07 and 56,537.89 is: 84,959.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,887.79 : 156,113.07 = 56,537.89 : x
  2. Step 2: Convert to fraction form
    103,887.79/156,113.07 = 56,537.89/x
  3. Step 3: Cross multiply
    103,887.79x = 156,113.07 × 56,537.89
  4. Step 4: Simplify right side
    103,887.79x = 8,826,303,579.22
  5. Step 5: Solve for x
    x = 8,826,303,579.22/103,887.79
  6. Step 6: Final answer
    x = 84,959.97

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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.