Home / 72,033.61-99,412.01-40,207.28

Finding the Fourth Proportional to 72,033.61, 99,412.01 and 40,207.28

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Solution

The fourth proportional to 72,033.61, 99,412.01 and 40,207.28 is: 55,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,033.61 : 99,412.01 = 40,207.28 : x
  2. Step 2: Convert to fraction form
    72,033.61/99,412.01 = 40,207.28/x
  3. Step 3: Cross multiply
    72,033.61x = 99,412.01 × 40,207.28
  4. Step 4: Simplify right side
    72,033.61x = 3,997,086,320.40
  5. Step 5: Solve for x
    x = 3,997,086,320.40/72,033.61
  6. Step 6: Final answer
    x = 55,489.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.