Home / 85,603.20-118,132.68-47,875

Finding the Fourth Proportional to 85,603.20, 118,132.68 and 47,875

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Solution

The fourth proportional to 85,603.20, 118,132.68 and 47,875 is: 66,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603.20 : 118,132.68 = 47,875 : x
  2. Step 2: Convert to fraction form
    85,603.20/118,132.68 = 47,875/x
  3. Step 3: Cross multiply
    85,603.20x = 118,132.68 × 47,875
  4. Step 4: Simplify right side
    85,603.20x = 5,655,602,055
  5. Step 5: Solve for x
    x = 5,655,602,055/85,603.20
  6. Step 6: Final answer
    x = 66,067.65

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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.