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Finding the Fourth Proportional to 101,384.85, 139,931.11 and 58,951.59

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Solution

The fourth proportional to 101,384.85, 139,931.11 and 58,951.59 is: 81,364.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,384.85 : 139,931.11 = 58,951.59 : x
  2. Step 2: Convert to fraction form
    101,384.85/139,931.11 = 58,951.59/x
  3. Step 3: Cross multiply
    101,384.85x = 139,931.11 × 58,951.59
  4. Step 4: Simplify right side
    101,384.85x = 8,249,161,424.96
  5. Step 5: Solve for x
    x = 8,249,161,424.96/101,384.85
  6. Step 6: Final answer
    x = 81,364.83

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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.