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Finding the Fourth Proportional to 64,770.58, 97,159.36 and 20,400.82

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Solution

The fourth proportional to 64,770.58, 97,159.36 and 20,400.82 is: 30,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,770.58 : 97,159.36 = 20,400.82 : x
  2. Step 2: Convert to fraction form
    64,770.58/97,159.36 = 20,400.82/x
  3. Step 3: Cross multiply
    64,770.58x = 97,159.36 × 20,400.82
  4. Step 4: Simplify right side
    64,770.58x = 1,982,130,614.68
  5. Step 5: Solve for x
    x = 1,982,130,614.68/64,770.58
  6. Step 6: Final answer
    x = 30,602.33

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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.