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Finding the Fourth Proportional to 84,829.80, 127,302.30 and 47,389.80

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Solution

The fourth proportional to 84,829.80, 127,302.30 and 47,389.80 is: 71,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,829.80 : 127,302.30 = 47,389.80 : x
  2. Step 2: Convert to fraction form
    84,829.80/127,302.30 = 47,389.80/x
  3. Step 3: Cross multiply
    84,829.80x = 127,302.30 × 47,389.80
  4. Step 4: Simplify right side
    84,829.80x = 6,032,830,536.54
  5. Step 5: Solve for x
    x = 6,032,830,536.54/84,829.80
  6. Step 6: Final answer
    x = 71,116.88

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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.