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Finding the Fourth Proportional to 84,798.30, 127,200.21 and 42,655.41

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Solution

The fourth proportional to 84,798.30, 127,200.21 and 42,655.41 is: 63,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,798.30 : 127,200.21 = 42,655.41 : x
  2. Step 2: Convert to fraction form
    84,798.30/127,200.21 = 42,655.41/x
  3. Step 3: Cross multiply
    84,798.30x = 127,200.21 × 42,655.41
  4. Step 4: Simplify right side
    84,798.30x = 5,425,777,109.64
  5. Step 5: Solve for x
    x = 5,425,777,109.64/84,798.30
  6. Step 6: Final answer
    x = 63,984.50

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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.