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Finding the Fourth Proportional to 84,903.16, 127,347.40 and 28,742.07

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Solution

The fourth proportional to 84,903.16, 127,347.40 and 28,742.07 is: 43,110.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,903.16 : 127,347.40 = 28,742.07 : x
  2. Step 2: Convert to fraction form
    84,903.16/127,347.40 = 28,742.07/x
  3. Step 3: Cross multiply
    84,903.16x = 127,347.40 × 28,742.07
  4. Step 4: Simplify right side
    84,903.16x = 3,660,227,885.12
  5. Step 5: Solve for x
    x = 3,660,227,885.12/84,903.16
  6. Step 6: Final answer
    x = 43,110.62

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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.