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Finding the Fourth Proportional to 72,907.92, 109,567.08 and 43,331.04

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Solution

The fourth proportional to 72,907.92, 109,567.08 and 43,331.04 is: 65,118.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,907.92 : 109,567.08 = 43,331.04 : x
  2. Step 2: Convert to fraction form
    72,907.92/109,567.08 = 43,331.04/x
  3. Step 3: Cross multiply
    72,907.92x = 109,567.08 × 43,331.04
  4. Step 4: Simplify right side
    72,907.92x = 4,747,655,526.16
  5. Step 5: Solve for x
    x = 4,747,655,526.16/72,907.92
  6. Step 6: Final answer
    x = 65,118.52

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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.