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Finding the Fourth Proportional to 72,403.80, 108,605.70 and 25,018.80

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Solution

The fourth proportional to 72,403.80, 108,605.70 and 25,018.80 is: 37,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403.80 : 108,605.70 = 25,018.80 : x
  2. Step 2: Convert to fraction form
    72,403.80/108,605.70 = 25,018.80/x
  3. Step 3: Cross multiply
    72,403.80x = 108,605.70 × 25,018.80
  4. Step 4: Simplify right side
    72,403.80x = 2,717,184,287.16
  5. Step 5: Solve for x
    x = 2,717,184,287.16/72,403.80
  6. Step 6: Final answer
    x = 37,528.20

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1.5x scale

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.