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Finding the Fourth Proportional to 101,803.45, 140,484.02 and 56,480.95

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Solution

The fourth proportional to 101,803.45, 140,484.02 and 56,480.95 is: 77,941.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,803.45 : 140,484.02 = 56,480.95 : x
  2. Step 2: Convert to fraction form
    101,803.45/140,484.02 = 56,480.95/x
  3. Step 3: Cross multiply
    101,803.45x = 140,484.02 × 56,480.95
  4. Step 4: Simplify right side
    101,803.45x = 7,934,669,924.59
  5. Step 5: Solve for x
    x = 7,934,669,924.59/101,803.45
  6. Step 6: Final answer
    x = 77,941.07

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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.