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Finding the Fourth Proportional to 101,749.95, 140,414.93 and 56,434.86

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Solution

The fourth proportional to 101,749.95, 140,414.93 and 56,434.86 is: 77,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,749.95 : 140,414.93 = 56,434.86 : x
  2. Step 2: Convert to fraction form
    101,749.95/140,414.93 = 56,434.86/x
  3. Step 3: Cross multiply
    101,749.95x = 140,414.93 × 56,434.86
  4. Step 4: Simplify right side
    101,749.95x = 7,924,296,916.46
  5. Step 5: Solve for x
    x = 7,924,296,916.46/101,749.95
  6. Step 6: Final answer
    x = 77,880.11

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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.