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Finding the Fourth Proportional to 101,574.80, 152,448.60 and 45,501.20

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Solution

The fourth proportional to 101,574.80, 152,448.60 and 45,501.20 is: 68,290.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,574.80 : 152,448.60 = 45,501.20 : x
  2. Step 2: Convert to fraction form
    101,574.80/152,448.60 = 45,501.20/x
  3. Step 3: Cross multiply
    101,574.80x = 152,448.60 × 45,501.20
  4. Step 4: Simplify right side
    101,574.80x = 6,936,594,238.32
  5. Step 5: Solve for x
    x = 6,936,594,238.32/101,574.80
  6. Step 6: Final answer
    x = 68,290.50

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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.