Home / 43,430.16-65,137.92-19,730.40

Finding the Fourth Proportional to 43,430.16, 65,137.92 and 19,730.40

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Solution

The fourth proportional to 43,430.16, 65,137.92 and 19,730.40 is: 29,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,430.16 : 65,137.92 = 19,730.40 : x
  2. Step 2: Convert to fraction form
    43,430.16/65,137.92 = 19,730.40/x
  3. Step 3: Cross multiply
    43,430.16x = 65,137.92 × 19,730.40
  4. Step 4: Simplify right side
    43,430.16x = 1,285,197,216.77
  5. Step 5: Solve for x
    x = 1,285,197,216.77/43,430.16
  6. Step 6: Final answer
    x = 29,592.27

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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.