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Finding the Fourth Proportional to 74,816.72, 112,225.80 and 19,412.72

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Solution

The fourth proportional to 74,816.72, 112,225.80 and 19,412.72 is: 29,119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,816.72 : 112,225.80 = 19,412.72 : x
  2. Step 2: Convert to fraction form
    74,816.72/112,225.80 = 19,412.72/x
  3. Step 3: Cross multiply
    74,816.72x = 112,225.80 × 19,412.72
  4. Step 4: Simplify right side
    74,816.72x = 2,178,608,032.18
  5. Step 5: Solve for x
    x = 2,178,608,032.18/74,816.72
  6. Step 6: Final answer
    x = 29,119.27

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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.