Home / 54,602.60-75,339.12-30,720.56

Finding the Fourth Proportional to 54,602.60, 75,339.12 and 30,720.56

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Solution

The fourth proportional to 54,602.60, 75,339.12 and 30,720.56 is: 42,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,602.60 : 75,339.12 = 30,720.56 : x
  2. Step 2: Convert to fraction form
    54,602.60/75,339.12 = 30,720.56/x
  3. Step 3: Cross multiply
    54,602.60x = 75,339.12 × 30,720.56
  4. Step 4: Simplify right side
    54,602.60x = 2,314,459,579.61
  5. Step 5: Solve for x
    x = 2,314,459,579.61/54,602.60
  6. Step 6: Final answer
    x = 42,387.36

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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.