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Finding the Fourth Proportional to 84,842.59, 127,211.58 and 28,677.40

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Solution

The fourth proportional to 84,842.59, 127,211.58 and 28,677.40 is: 42,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,842.59 : 127,211.58 = 28,677.40 : x
  2. Step 2: Convert to fraction form
    84,842.59/127,211.58 = 28,677.40/x
  3. Step 3: Cross multiply
    84,842.59x = 127,211.58 × 28,677.40
  4. Step 4: Simplify right side
    84,842.59x = 3,648,097,364.29
  5. Step 5: Solve for x
    x = 3,648,097,364.29/84,842.59
  6. Step 6: Final answer
    x = 42,998.42

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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.