Home / 72,017.91-99,385.48-40,186.13

Finding the Fourth Proportional to 72,017.91, 99,385.48 and 40,186.13

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Solution

The fourth proportional to 72,017.91, 99,385.48 and 40,186.13 is: 55,457.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.91 : 99,385.48 = 40,186.13 : x
  2. Step 2: Convert to fraction form
    72,017.91/99,385.48 = 40,186.13/x
  3. Step 3: Cross multiply
    72,017.91x = 99,385.48 × 40,186.13
  4. Step 4: Simplify right side
    72,017.91x = 3,993,917,372.70
  5. Step 5: Solve for x
    x = 3,993,917,372.70/72,017.91
  6. Step 6: Final answer
    x = 55,457.28

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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.