Home / 81,611.74-122,155.17-42,115.06

Finding the Fourth Proportional to 81,611.74, 122,155.17 and 42,115.06

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Solution

The fourth proportional to 81,611.74, 122,155.17 and 42,115.06 is: 63,037.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,611.74 : 122,155.17 = 42,115.06 : x
  2. Step 2: Convert to fraction form
    81,611.74/122,155.17 = 42,115.06/x
  3. Step 3: Cross multiply
    81,611.74x = 122,155.17 × 42,115.06
  4. Step 4: Simplify right side
    81,611.74x = 5,144,572,313.86
  5. Step 5: Solve for x
    x = 5,144,572,313.86/81,611.74
  6. Step 6: Final answer
    x = 63,037.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.