Home / 54,804.16-75,630-30,931.84

Finding the Fourth Proportional to 54,804.16, 75,630 and 30,931.84

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Solution

The fourth proportional to 54,804.16, 75,630 and 30,931.84 is: 42,686.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,804.16 : 75,630 = 30,931.84 : x
  2. Step 2: Convert to fraction form
    54,804.16/75,630 = 30,931.84/x
  3. Step 3: Cross multiply
    54,804.16x = 75,630 × 30,931.84
  4. Step 4: Simplify right side
    54,804.16x = 2,339,375,059.20
  5. Step 5: Solve for x
    x = 2,339,375,059.20/54,804.16
  6. Step 6: Final answer
    x = 42,686.09

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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.