Home / 54,382.08-74,967.84-38,438.40

Finding the Fourth Proportional to 54,382.08, 74,967.84 and 38,438.40

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Solution

The fourth proportional to 54,382.08, 74,967.84 and 38,438.40 is: 52,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,382.08 : 74,967.84 = 38,438.40 : x
  2. Step 2: Convert to fraction form
    54,382.08/74,967.84 = 38,438.40/x
  3. Step 3: Cross multiply
    54,382.08x = 74,967.84 × 38,438.40
  4. Step 4: Simplify right side
    54,382.08x = 2,881,643,821.06
  5. Step 5: Solve for x
    x = 2,881,643,821.06/54,382.08
  6. Step 6: Final answer
    x = 52,988.85

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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.