Home / 81,362.15-121,548.41-52,665.32

Finding the Fourth Proportional to 81,362.15, 121,548.41 and 52,665.32

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Solution

The fourth proportional to 81,362.15, 121,548.41 and 52,665.32 is: 78,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,362.15 : 121,548.41 = 52,665.32 : x
  2. Step 2: Convert to fraction form
    81,362.15/121,548.41 = 52,665.32/x
  3. Step 3: Cross multiply
    81,362.15x = 121,548.41 × 52,665.32
  4. Step 4: Simplify right side
    81,362.15x = 6,401,385,037.07
  5. Step 5: Solve for x
    x = 6,401,385,037.07/81,362.15
  6. Step 6: Final answer
    x = 78,677.68

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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.