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Finding the Fourth Proportional to 85,133.69, 127,707.87 and 21,953.25

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Solution

The fourth proportional to 85,133.69, 127,707.87 and 21,953.25 is: 32,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,133.69 : 127,707.87 = 21,953.25 : x
  2. Step 2: Convert to fraction form
    85,133.69/127,707.87 = 21,953.25/x
  3. Step 3: Cross multiply
    85,133.69x = 127,707.87 × 21,953.25
  4. Step 4: Simplify right side
    85,133.69x = 2,803,602,797.08
  5. Step 5: Solve for x
    x = 2,803,602,797.08/85,133.69
  6. Step 6: Final answer
    x = 32,931.77

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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.