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Finding the Fourth Proportional to 84,970.71, 127,447.81 and 25,806.89

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Solution

The fourth proportional to 84,970.71, 127,447.81 and 25,806.89 is: 38,707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,970.71 : 127,447.81 = 25,806.89 : x
  2. Step 2: Convert to fraction form
    84,970.71/127,447.81 = 25,806.89/x
  3. Step 3: Cross multiply
    84,970.71x = 127,447.81 × 25,806.89
  4. Step 4: Simplify right side
    84,970.71x = 3,289,031,867.51
  5. Step 5: Solve for x
    x = 3,289,031,867.51/84,970.71
  6. Step 6: Final answer
    x = 38,707.83

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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.