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Finding the Fourth Proportional to 83,430.67, 115,133.37 and 45,189.49

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Solution

The fourth proportional to 83,430.67, 115,133.37 and 45,189.49 is: 62,360.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430.67 : 115,133.37 = 45,189.49 : x
  2. Step 2: Convert to fraction form
    83,430.67/115,133.37 = 45,189.49/x
  3. Step 3: Cross multiply
    83,430.67x = 115,133.37 × 45,189.49
  4. Step 4: Simplify right side
    83,430.67x = 5,202,818,272.28
  5. Step 5: Solve for x
    x = 5,202,818,272.28/83,430.67
  6. Step 6: Final answer
    x = 62,360.98

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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.