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Finding the Fourth Proportional to 86,648.55, 129,971.80 and 27,484.73

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Solution

The fourth proportional to 86,648.55, 129,971.80 and 27,484.73 is: 41,226.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,648.55 : 129,971.80 = 27,484.73 : x
  2. Step 2: Convert to fraction form
    86,648.55/129,971.80 = 27,484.73/x
  3. Step 3: Cross multiply
    86,648.55x = 129,971.80 × 27,484.73
  4. Step 4: Simplify right side
    86,648.55x = 3,572,239,693.19
  5. Step 5: Solve for x
    x = 3,572,239,693.19/86,648.55
  6. Step 6: Final answer
    x = 41,226.77

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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.