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Finding the Fourth Proportional to 70,839, 97,761.91 and 40,624.08

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Solution

The fourth proportional to 70,839, 97,761.91 and 40,624.08 is: 56,063.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,839 : 97,761.91 = 40,624.08 : x
  2. Step 2: Convert to fraction form
    70,839/97,761.91 = 40,624.08/x
  3. Step 3: Cross multiply
    70,839x = 97,761.91 × 40,624.08
  4. Step 4: Simplify right side
    70,839x = 3,971,487,652.79
  5. Step 5: Solve for x
    x = 3,971,487,652.79/70,839
  6. Step 6: Final answer
    x = 56,063.58

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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.