Home / 85,107.52-117,441.12-47,385.28

Finding the Fourth Proportional to 85,107.52, 117,441.12 and 47,385.28

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Solution

The fourth proportional to 85,107.52, 117,441.12 and 47,385.28 is: 65,387.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,107.52 : 117,441.12 = 47,385.28 : x
  2. Step 2: Convert to fraction form
    85,107.52/117,441.12 = 47,385.28/x
  3. Step 3: Cross multiply
    85,107.52x = 117,441.12 × 47,385.28
  4. Step 4: Simplify right side
    85,107.52x = 5,564,980,354.71
  5. Step 5: Solve for x
    x = 5,564,980,354.71/85,107.52
  6. Step 6: Final answer
    x = 65,387.65

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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.