Home / 54,658.08-75,421.80-30,784.32

Finding the Fourth Proportional to 54,658.08, 75,421.80 and 30,784.32

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Solution

The fourth proportional to 54,658.08, 75,421.80 and 30,784.32 is: 42,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,658.08 : 75,421.80 = 30,784.32 : x
  2. Step 2: Convert to fraction form
    54,658.08/75,421.80 = 30,784.32/x
  3. Step 3: Cross multiply
    54,658.08x = 75,421.80 × 30,784.32
  4. Step 4: Simplify right side
    54,658.08x = 2,321,808,826.18
  5. Step 5: Solve for x
    x = 2,321,808,826.18/54,658.08
  6. Step 6: Final answer
    x = 42,478.78

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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.