Home / 72,158.28-99,577.80-40,326.36

Finding the Fourth Proportional to 72,158.28, 99,577.80 and 40,326.36

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Solution

The fourth proportional to 72,158.28, 99,577.80 and 40,326.36 is: 55,650.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.28 : 99,577.80 = 40,326.36 : x
  2. Step 2: Convert to fraction form
    72,158.28/99,577.80 = 40,326.36/x
  3. Step 3: Cross multiply
    72,158.28x = 99,577.80 × 40,326.36
  4. Step 4: Simplify right side
    72,158.28x = 4,015,610,210.81
  5. Step 5: Solve for x
    x = 4,015,610,210.81/72,158.28
  6. Step 6: Final answer
    x = 55,650.03

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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.