Home / 65,430.57-98,145.91-21,057.31

Finding the Fourth Proportional to 65,430.57, 98,145.91 and 21,057.31

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Solution

The fourth proportional to 65,430.57, 98,145.91 and 21,057.31 is: 31,585.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,430.57 : 98,145.91 = 21,057.31 : x
  2. Step 2: Convert to fraction form
    65,430.57/98,145.91 = 21,057.31/x
  3. Step 3: Cross multiply
    65,430.57x = 98,145.91 × 21,057.31
  4. Step 4: Simplify right side
    65,430.57x = 2,066,689,001.11
  5. Step 5: Solve for x
    x = 2,066,689,001.11/65,430.57
  6. Step 6: Final answer
    x = 31,585.98

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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.