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Finding the Fourth Proportional to 70,118.96, 105,220.04 and 28,018.89

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Solution

The fourth proportional to 70,118.96, 105,220.04 and 28,018.89 is: 42,044.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118.96 : 105,220.04 = 28,018.89 : x
  2. Step 2: Convert to fraction form
    70,118.96/105,220.04 = 28,018.89/x
  3. Step 3: Cross multiply
    70,118.96x = 105,220.04 × 28,018.89
  4. Step 4: Simplify right side
    70,118.96x = 2,948,148,586.46
  5. Step 5: Solve for x
    x = 2,948,148,586.46/70,118.96
  6. Step 6: Final answer
    x = 42,044.96

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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.