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Finding the Fourth Proportional to 98,669.36, 148,028.36 and 28,555.76

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Solution

The fourth proportional to 98,669.36, 148,028.36 and 28,555.76 is: 42,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,669.36 : 148,028.36 = 28,555.76 : x
  2. Step 2: Convert to fraction form
    98,669.36/148,028.36 = 28,555.76/x
  3. Step 3: Cross multiply
    98,669.36x = 148,028.36 × 28,555.76
  4. Step 4: Simplify right side
    98,669.36x = 4,227,062,548.65
  5. Step 5: Solve for x
    x = 4,227,062,548.65/98,669.36
  6. Step 6: Final answer
    x = 42,840.68

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1.5x scale

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.