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Finding the Fourth Proportional to 34,230.72, 47,237.90 and 19,123.68

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Solution

The fourth proportional to 34,230.72, 47,237.90 and 19,123.68 is: 26,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,230.72 : 47,237.90 = 19,123.68 : x
  2. Step 2: Convert to fraction form
    34,230.72/47,237.90 = 19,123.68/x
  3. Step 3: Cross multiply
    34,230.72x = 47,237.90 × 19,123.68
  4. Step 4: Simplify right side
    34,230.72x = 903,362,483.47
  5. Step 5: Solve for x
    x = 903,362,483.47/34,230.72
  6. Step 6: Final answer
    x = 26,390.40

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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.