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Finding the Fourth Proportional to 104,307.38, 143,943.40 and 56,560.66

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Solution

The fourth proportional to 104,307.38, 143,943.40 and 56,560.66 is: 78,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,307.38 : 143,943.40 = 56,560.66 : x
  2. Step 2: Convert to fraction form
    104,307.38/143,943.40 = 56,560.66/x
  3. Step 3: Cross multiply
    104,307.38x = 143,943.40 × 56,560.66
  4. Step 4: Simplify right side
    104,307.38x = 8,141,533,706.64
  5. Step 5: Solve for x
    x = 8,141,533,706.64/104,307.38
  6. Step 6: Final answer
    x = 78,053.29

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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.