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Finding the Fourth Proportional to 104,275.90, 143,901.48 and 56,530

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Solution

The fourth proportional to 104,275.90, 143,901.48 and 56,530 is: 78,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,275.90 : 143,901.48 = 56,530 : x
  2. Step 2: Convert to fraction form
    104,275.90/143,901.48 = 56,530/x
  3. Step 3: Cross multiply
    104,275.90x = 143,901.48 × 56,530
  4. Step 4: Simplify right side
    104,275.90x = 8,134,750,664.40
  5. Step 5: Solve for x
    x = 8,134,750,664.40/104,275.90
  6. Step 6: Final answer
    x = 78,011.80

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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.