Home / 85,725.74-118,282.38-51,739.76

Finding the Fourth Proportional to 85,725.74, 118,282.38 and 51,739.76

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Solution

The fourth proportional to 85,725.74, 118,282.38 and 51,739.76 is: 71,389.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,725.74 : 118,282.38 = 51,739.76 : x
  2. Step 2: Convert to fraction form
    85,725.74/118,282.38 = 51,739.76/x
  3. Step 3: Cross multiply
    85,725.74x = 118,282.38 × 51,739.76
  4. Step 4: Simplify right side
    85,725.74x = 6,119,901,953.43
  5. Step 5: Solve for x
    x = 6,119,901,953.43/85,725.74
  6. Step 6: Final answer
    x = 71,389.32

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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.