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Finding the Fourth Proportional to 104,784.21, 144,605.47 and 57,040.74

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Solution

The fourth proportional to 104,784.21, 144,605.47 and 57,040.74 is: 78,718.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,784.21 : 144,605.47 = 57,040.74 : x
  2. Step 2: Convert to fraction form
    104,784.21/144,605.47 = 57,040.74/x
  3. Step 3: Cross multiply
    104,784.21x = 144,605.47 × 57,040.74
  4. Step 4: Simplify right side
    104,784.21x = 8,248,403,375.86
  5. Step 5: Solve for x
    x = 8,248,403,375.86/104,784.21
  6. Step 6: Final answer
    x = 78,718.00

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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.