Home / 72,380.64-99,887.04-40,556.40

Finding the Fourth Proportional to 72,380.64, 99,887.04 and 40,556.40

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Solution

The fourth proportional to 72,380.64, 99,887.04 and 40,556.40 is: 55,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,380.64 : 99,887.04 = 40,556.40 : x
  2. Step 2: Convert to fraction form
    72,380.64/99,887.04 = 40,556.40/x
  3. Step 3: Cross multiply
    72,380.64x = 99,887.04 × 40,556.40
  4. Step 4: Simplify right side
    72,380.64x = 4,051,058,749.06
  5. Step 5: Solve for x
    x = 4,051,058,749.06/72,380.64
  6. Step 6: Final answer
    x = 55,968.82

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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.