Home / 89,031.45-122,946.66-57,255.51

Finding the Fourth Proportional to 89,031.45, 122,946.66 and 57,255.51

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Solution

The fourth proportional to 89,031.45, 122,946.66 and 57,255.51 is: 79,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,031.45 : 122,946.66 = 57,255.51 : x
  2. Step 2: Convert to fraction form
    89,031.45/122,946.66 = 57,255.51/x
  3. Step 3: Cross multiply
    89,031.45x = 122,946.66 × 57,255.51
  4. Step 4: Simplify right side
    89,031.45x = 7,039,373,721.10
  5. Step 5: Solve for x
    x = 7,039,373,721.10/89,031.45
  6. Step 6: Final answer
    x = 79,066.15

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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.