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Finding the Fourth Proportional to 145,878.54, 218,854.72 and 40,697.44

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Solution

The fourth proportional to 145,878.54, 218,854.72 and 40,697.44 is: 61,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,878.54 : 218,854.72 = 40,697.44 : x
  2. Step 2: Convert to fraction form
    145,878.54/218,854.72 = 40,697.44/x
  3. Step 3: Cross multiply
    145,878.54x = 218,854.72 × 40,697.44
  4. Step 4: Simplify right side
    145,878.54x = 8,906,826,835.92
  5. Step 5: Solve for x
    x = 8,906,826,835.92/145,878.54
  6. Step 6: Final answer
    x = 61,056.46

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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.