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Finding the Fourth Proportional to 66,430.30, 99,628.44 and 19,672.24

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Solution

The fourth proportional to 66,430.30, 99,628.44 and 19,672.24 is: 29,503.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.30 : 99,628.44 = 19,672.24 : x
  2. Step 2: Convert to fraction form
    66,430.30/99,628.44 = 19,672.24/x
  3. Step 3: Cross multiply
    66,430.30x = 99,628.44 × 19,672.24
  4. Step 4: Simplify right side
    66,430.30x = 1,959,914,582.51
  5. Step 5: Solve for x
    x = 1,959,914,582.51/66,430.30
  6. Step 6: Final answer
    x = 29,503.32

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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.