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Finding the Fourth Proportional to 71,019.84, 98,006.85 and 40,392.89

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Solution

The fourth proportional to 71,019.84, 98,006.85 and 40,392.89 is: 55,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.84 : 98,006.85 = 40,392.89 : x
  2. Step 2: Convert to fraction form
    71,019.84/98,006.85 = 40,392.89/x
  3. Step 3: Cross multiply
    71,019.84x = 98,006.85 × 40,392.89
  4. Step 4: Simplify right side
    71,019.84x = 3,958,779,421.26
  5. Step 5: Solve for x
    x = 3,958,779,421.26/71,019.84
  6. Step 6: Final answer
    x = 55,741.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.