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Finding the Fourth Proportional to 42,003.60, 62,940.60 and 36,430.80

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Solution

The fourth proportional to 42,003.60, 62,940.60 and 36,430.80 is: 54,590.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,003.60 : 62,940.60 = 36,430.80 : x
  2. Step 2: Convert to fraction form
    42,003.60/62,940.60 = 36,430.80/x
  3. Step 3: Cross multiply
    42,003.60x = 62,940.60 × 36,430.80
  4. Step 4: Simplify right side
    42,003.60x = 2,292,976,410.48
  5. Step 5: Solve for x
    x = 2,292,976,410.48/42,003.60
  6. Step 6: Final answer
    x = 54,590.00

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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.