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Finding the Fourth Proportional to 85,984.32, 118,663.68 and 57,254.72

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Solution

The fourth proportional to 85,984.32, 118,663.68 and 57,254.72 is: 79,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,984.32 : 118,663.68 = 57,254.72 : x
  2. Step 2: Convert to fraction form
    85,984.32/118,663.68 = 57,254.72/x
  3. Step 3: Cross multiply
    85,984.32x = 118,663.68 × 57,254.72
  4. Step 4: Simplify right side
    85,984.32x = 6,794,055,772.57
  5. Step 5: Solve for x
    x = 6,794,055,772.57/85,984.32
  6. Step 6: Final answer
    x = 79,015.05

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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.