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Finding the Fourth Proportional to 145,730.48, 218,659.20 and 51,028.68

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Solution

The fourth proportional to 145,730.48, 218,659.20 and 51,028.68 is: 76,565.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,730.48 : 218,659.20 = 51,028.68 : x
  2. Step 2: Convert to fraction form
    145,730.48/218,659.20 = 51,028.68/x
  3. Step 3: Cross multiply
    145,730.48x = 218,659.20 × 51,028.68
  4. Step 4: Simplify right side
    145,730.48x = 11,157,890,974.47
  5. Step 5: Solve for x
    x = 11,157,890,974.47/145,730.48
  6. Step 6: Final answer
    x = 76,565.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.