Home / 72,072.15-99,459.75-40,242.18

Finding the Fourth Proportional to 72,072.15, 99,459.75 and 40,242.18

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Solution

The fourth proportional to 72,072.15, 99,459.75 and 40,242.18 is: 55,534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,072.15 : 99,459.75 = 40,242.18 : x
  2. Step 2: Convert to fraction form
    72,072.15/99,459.75 = 40,242.18/x
  3. Step 3: Cross multiply
    72,072.15x = 99,459.75 × 40,242.18
  4. Step 4: Simplify right side
    72,072.15x = 4,002,477,162.26
  5. Step 5: Solve for x
    x = 4,002,477,162.26/72,072.15
  6. Step 6: Final answer
    x = 55,534.31

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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.