Home / 81,434.76-112,384.44-45,135.46

Finding the Fourth Proportional to 81,434.76, 112,384.44 and 45,135.46

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Solution

The fourth proportional to 81,434.76, 112,384.44 and 45,135.46 is: 62,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,434.76 : 112,384.44 = 45,135.46 : x
  2. Step 2: Convert to fraction form
    81,434.76/112,384.44 = 45,135.46/x
  3. Step 3: Cross multiply
    81,434.76x = 112,384.44 × 45,135.46
  4. Step 4: Simplify right side
    81,434.76x = 5,072,523,536.72
  5. Step 5: Solve for x
    x = 5,072,523,536.72/81,434.76
  6. Step 6: Final answer
    x = 62,289.41

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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.