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Finding the Fourth Proportional to 103,573.84, 142,919.32 and 57,622.60

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Solution

The fourth proportional to 103,573.84, 142,919.32 and 57,622.60 is: 79,512.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,573.84 : 142,919.32 = 57,622.60 : x
  2. Step 2: Convert to fraction form
    103,573.84/142,919.32 = 57,622.60/x
  3. Step 3: Cross multiply
    103,573.84x = 142,919.32 × 57,622.60
  4. Step 4: Simplify right side
    103,573.84x = 8,235,382,808.63
  5. Step 5: Solve for x
    x = 8,235,382,808.63/103,573.84
  6. Step 6: Final answer
    x = 79,512.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.