Home / 81,444.48-121,609.70-72,956.22

Finding the Fourth Proportional to 81,444.48, 121,609.70 and 72,956.22

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Solution

The fourth proportional to 81,444.48, 121,609.70 and 72,956.22 is: 108,935.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,444.48 : 121,609.70 = 72,956.22 : x
  2. Step 2: Convert to fraction form
    81,444.48/121,609.70 = 72,956.22/x
  3. Step 3: Cross multiply
    81,444.48x = 121,609.70 × 72,956.22
  4. Step 4: Simplify right side
    81,444.48x = 8,872,184,027.33
  5. Step 5: Solve for x
    x = 8,872,184,027.33/81,444.48
  6. Step 6: Final answer
    x = 108,935.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.