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Finding the Fourth Proportional to 98,417.60, 147,645.60 and 42,257.60

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Solution

The fourth proportional to 98,417.60, 147,645.60 and 42,257.60 is: 63,394.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,417.60 : 147,645.60 = 42,257.60 : x
  2. Step 2: Convert to fraction form
    98,417.60/147,645.60 = 42,257.60/x
  3. Step 3: Cross multiply
    98,417.60x = 147,645.60 × 42,257.60
  4. Step 4: Simplify right side
    98,417.60x = 6,239,148,706.56
  5. Step 5: Solve for x
    x = 6,239,148,706.56/98,417.60
  6. Step 6: Final answer
    x = 63,394.64

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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.