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Finding the Fourth Proportional to 60,947.40, 91,430.22 and 19,403.72

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Solution

The fourth proportional to 60,947.40, 91,430.22 and 19,403.72 is: 29,108.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,947.40 : 91,430.22 = 19,403.72 : x
  2. Step 2: Convert to fraction form
    60,947.40/91,430.22 = 19,403.72/x
  3. Step 3: Cross multiply
    60,947.40x = 91,430.22 × 19,403.72
  4. Step 4: Simplify right side
    60,947.40x = 1,774,086,388.42
  5. Step 5: Solve for x
    x = 1,774,086,388.42/60,947.40
  6. Step 6: Final answer
    x = 29,108.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.