Home / 85,535.41-128,338.99-38,117.83

Finding the Fourth Proportional to 85,535.41, 128,338.99 and 38,117.83

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Solution

The fourth proportional to 85,535.41, 128,338.99 and 38,117.83 is: 57,192.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.41 : 128,338.99 = 38,117.83 : x
  2. Step 2: Convert to fraction form
    85,535.41/128,338.99 = 38,117.83/x
  3. Step 3: Cross multiply
    85,535.41x = 128,338.99 × 38,117.83
  4. Step 4: Simplify right side
    85,535.41x = 4,892,003,803.19
  5. Step 5: Solve for x
    x = 4,892,003,803.19/85,535.41
  6. Step 6: Final answer
    x = 57,192.74

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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.