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Finding the Fourth Proportional to 43,809.10, 65,713.65 and 43,420.30

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Solution

The fourth proportional to 43,809.10, 65,713.65 and 43,420.30 is: 65,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,809.10 : 65,713.65 = 43,420.30 : x
  2. Step 2: Convert to fraction form
    43,809.10/65,713.65 = 43,420.30/x
  3. Step 3: Cross multiply
    43,809.10x = 65,713.65 × 43,420.30
  4. Step 4: Simplify right side
    43,809.10x = 2,853,306,397.10
  5. Step 5: Solve for x
    x = 2,853,306,397.10/43,809.10
  6. Step 6: Final answer
    x = 65,130.45

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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.