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Finding the Fourth Proportional to 104,726.40, 144,523.08 and 56,980.10

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Solution

The fourth proportional to 104,726.40, 144,523.08 and 56,980.10 is: 78,632.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,726.40 : 144,523.08 = 56,980.10 : x
  2. Step 2: Convert to fraction form
    104,726.40/144,523.08 = 56,980.10/x
  3. Step 3: Cross multiply
    104,726.40x = 144,523.08 × 56,980.10
  4. Step 4: Simplify right side
    104,726.40x = 8,234,939,550.71
  5. Step 5: Solve for x
    x = 8,234,939,550.71/104,726.40
  6. Step 6: Final answer
    x = 78,632.89

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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.