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Finding the Fourth Proportional to 84,548.71, 126,762.99 and 42,398.38

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Solution

The fourth proportional to 84,548.71, 126,762.99 and 42,398.38 is: 63,567.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,548.71 : 126,762.99 = 42,398.38 : x
  2. Step 2: Convert to fraction form
    84,548.71/126,762.99 = 42,398.38/x
  3. Step 3: Cross multiply
    84,548.71x = 126,762.99 × 42,398.38
  4. Step 4: Simplify right side
    84,548.71x = 5,374,545,419.96
  5. Step 5: Solve for x
    x = 5,374,545,419.96/84,548.71
  6. Step 6: Final answer
    x = 63,567.44

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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.