Home / 85,711.44-118,267.64-53,857.76

Finding the Fourth Proportional to 85,711.44, 118,267.64 and 53,857.76

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Solution

The fourth proportional to 85,711.44, 118,267.64 and 53,857.76 is: 74,314.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,711.44 : 118,267.64 = 53,857.76 : x
  2. Step 2: Convert to fraction form
    85,711.44/118,267.64 = 53,857.76/x
  3. Step 3: Cross multiply
    85,711.44x = 118,267.64 × 53,857.76
  4. Step 4: Simplify right side
    85,711.44x = 6,369,630,170.89
  5. Step 5: Solve for x
    x = 6,369,630,170.89/85,711.44
  6. Step 6: Final answer
    x = 74,314.82

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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.