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Finding the Fourth Proportional to 86,741.84, 129,484.90 and 76,244.24

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Solution

The fourth proportional to 86,741.84, 129,484.90 and 76,244.24 is: 113,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,741.84 : 129,484.90 = 76,244.24 : x
  2. Step 2: Convert to fraction form
    86,741.84/129,484.90 = 76,244.24/x
  3. Step 3: Cross multiply
    86,741.84x = 129,484.90 × 76,244.24
  4. Step 4: Simplify right side
    86,741.84x = 9,872,477,791.98
  5. Step 5: Solve for x
    x = 9,872,477,791.98/86,741.84
  6. Step 6: Final answer
    x = 113,814.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.