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Finding the Fourth Proportional to 98,909.42, 148,374.44 and 28,788.72

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Solution

The fourth proportional to 98,909.42, 148,374.44 and 28,788.72 is: 43,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,909.42 : 148,374.44 = 28,788.72 : x
  2. Step 2: Convert to fraction form
    98,909.42/148,374.44 = 28,788.72/x
  3. Step 3: Cross multiply
    98,909.42x = 148,374.44 × 28,788.72
  4. Step 4: Simplify right side
    98,909.42x = 4,271,510,208.32
  5. Step 5: Solve for x
    x = 4,271,510,208.32/98,909.42
  6. Step 6: Final answer
    x = 43,186.08

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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.