Home / 85,679.78-118,282.48-53,423.96

Finding the Fourth Proportional to 85,679.78, 118,282.48 and 53,423.96

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Solution

The fourth proportional to 85,679.78, 118,282.48 and 53,423.96 is: 73,752.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,679.78 : 118,282.48 = 53,423.96 : x
  2. Step 2: Convert to fraction form
    85,679.78/118,282.48 = 53,423.96/x
  3. Step 3: Cross multiply
    85,679.78x = 118,282.48 × 53,423.96
  4. Step 4: Simplify right side
    85,679.78x = 6,319,118,480.22
  5. Step 5: Solve for x
    x = 6,319,118,480.22/85,679.78
  6. Step 6: Final answer
    x = 73,752.74

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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.