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Finding the Fourth Proportional to 104,062, 143,605.98 and 56,315.34

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Solution

The fourth proportional to 104,062, 143,605.98 and 56,315.34 is: 77,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,062 : 143,605.98 = 56,315.34 : x
  2. Step 2: Convert to fraction form
    104,062/143,605.98 = 56,315.34/x
  3. Step 3: Cross multiply
    104,062x = 143,605.98 × 56,315.34
  4. Step 4: Simplify right side
    104,062x = 8,087,219,589.73
  5. Step 5: Solve for x
    x = 8,087,219,589.73/104,062
  6. Step 6: Final answer
    x = 77,715.40

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Why These Related Problems?

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