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Finding the Fourth Proportional to 86,416.88, 129,676.34 and 36,493.74

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Solution

The fourth proportional to 86,416.88, 129,676.34 and 36,493.74 is: 54,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,416.88 : 129,676.34 = 36,493.74 : x
  2. Step 2: Convert to fraction form
    86,416.88/129,676.34 = 36,493.74/x
  3. Step 3: Cross multiply
    86,416.88x = 129,676.34 × 36,493.74
  4. Step 4: Simplify right side
    86,416.88x = 4,732,374,727.35
  5. Step 5: Solve for x
    x = 4,732,374,727.35/86,416.88
  6. Step 6: Final answer
    x = 54,762.16

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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.