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Finding the Fourth Proportional to 49,637.60, 74,430.80 and 18,456.80

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Solution

The fourth proportional to 49,637.60, 74,430.80 and 18,456.80 is: 27,675.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,637.60 : 74,430.80 = 18,456.80 : x
  2. Step 2: Convert to fraction form
    49,637.60/74,430.80 = 18,456.80/x
  3. Step 3: Cross multiply
    49,637.60x = 74,430.80 × 18,456.80
  4. Step 4: Simplify right side
    49,637.60x = 1,373,754,389.44
  5. Step 5: Solve for x
    x = 1,373,754,389.44/49,637.60
  6. Step 6: Final answer
    x = 27,675.68

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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.