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Finding the Fourth Proportional to 85,124.87, 127,698.59 and 45,164.28

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Solution

The fourth proportional to 85,124.87, 127,698.59 and 45,164.28 is: 67,752.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,124.87 : 127,698.59 = 45,164.28 : x
  2. Step 2: Convert to fraction form
    85,124.87/127,698.59 = 45,164.28/x
  3. Step 3: Cross multiply
    85,124.87x = 127,698.59 × 45,164.28
  4. Step 4: Simplify right side
    85,124.87x = 5,767,415,275.61
  5. Step 5: Solve for x
    x = 5,767,415,275.61/85,124.87
  6. Step 6: Final answer
    x = 67,752.41

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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.