Home / 84,931.72-127,397.58-38,129.92

Finding the Fourth Proportional to 84,931.72, 127,397.58 and 38,129.92

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Solution

The fourth proportional to 84,931.72, 127,397.58 and 38,129.92 is: 57,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,931.72 : 127,397.58 = 38,129.92 : x
  2. Step 2: Convert to fraction form
    84,931.72/127,397.58 = 38,129.92/x
  3. Step 3: Cross multiply
    84,931.72x = 127,397.58 × 38,129.92
  4. Step 4: Simplify right side
    84,931.72x = 4,857,659,533.59
  5. Step 5: Solve for x
    x = 4,857,659,533.59/84,931.72
  6. Step 6: Final answer
    x = 57,194.88

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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.