Home / 85,977.24-128,946.56-36,113.64

Finding the Fourth Proportional to 85,977.24, 128,946.56 and 36,113.64

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Solution

The fourth proportional to 85,977.24, 128,946.56 and 36,113.64 is: 54,162.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,977.24 : 128,946.56 = 36,113.64 : x
  2. Step 2: Convert to fraction form
    85,977.24/128,946.56 = 36,113.64/x
  3. Step 3: Cross multiply
    85,977.24x = 128,946.56 × 36,113.64
  4. Step 4: Simplify right side
    85,977.24x = 4,656,729,466.51
  5. Step 5: Solve for x
    x = 4,656,729,466.51/85,977.24
  6. Step 6: Final answer
    x = 54,162.35

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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.