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Finding the Fourth Proportional to 86,897.82, 119,931.81 and 55,069.62

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Solution

The fourth proportional to 86,897.82, 119,931.81 and 55,069.62 is: 76,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,897.82 : 119,931.81 = 55,069.62 : x
  2. Step 2: Convert to fraction form
    86,897.82/119,931.81 = 55,069.62/x
  3. Step 3: Cross multiply
    86,897.82x = 119,931.81 × 55,069.62
  4. Step 4: Simplify right side
    86,897.82x = 6,604,599,202.61
  5. Step 5: Solve for x
    x = 6,604,599,202.61/86,897.82
  6. Step 6: Final answer
    x = 76,004.20

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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.