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Finding the Fourth Proportional to 87,088, 120,207.10 and 56,877.98

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Solution

The fourth proportional to 87,088, 120,207.10 and 56,877.98 is: 78,508.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,088 : 120,207.10 = 56,877.98 : x
  2. Step 2: Convert to fraction form
    87,088/120,207.10 = 56,877.98/x
  3. Step 3: Cross multiply
    87,088x = 120,207.10 × 56,877.98
  4. Step 4: Simplify right side
    87,088x = 6,837,137,029.66
  5. Step 5: Solve for x
    x = 6,837,137,029.66/87,088
  6. Step 6: Final answer
    x = 78,508.37

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