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Finding the Fourth Proportional to 71,573.58, 98,770.05 and 39,740.58

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Solution

The fourth proportional to 71,573.58, 98,770.05 and 39,740.58 is: 54,841.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,573.58 : 98,770.05 = 39,740.58 : x
  2. Step 2: Convert to fraction form
    71,573.58/98,770.05 = 39,740.58/x
  3. Step 3: Cross multiply
    71,573.58x = 98,770.05 × 39,740.58
  4. Step 4: Simplify right side
    71,573.58x = 3,925,179,073.63
  5. Step 5: Solve for x
    x = 3,925,179,073.63/71,573.58
  6. Step 6: Final answer
    x = 54,841.17

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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.