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Finding the Fourth Proportional to 72,430.40, 108,645.60 and 22,510.10

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Solution

The fourth proportional to 72,430.40, 108,645.60 and 22,510.10 is: 33,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.40 : 108,645.60 = 22,510.10 : x
  2. Step 2: Convert to fraction form
    72,430.40/108,645.60 = 22,510.10/x
  3. Step 3: Cross multiply
    72,430.40x = 108,645.60 × 22,510.10
  4. Step 4: Simplify right side
    72,430.40x = 2,445,623,320.56
  5. Step 5: Solve for x
    x = 2,445,623,320.56/72,430.40
  6. Step 6: Final answer
    x = 33,765.15

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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.