Home / 78,963.12-108,969.15-43,153.13

Finding the Fourth Proportional to 78,963.12, 108,969.15 and 43,153.13

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Solution

The fourth proportional to 78,963.12, 108,969.15 and 43,153.13 is: 59,551.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,963.12 : 108,969.15 = 43,153.13 : x
  2. Step 2: Convert to fraction form
    78,963.12/108,969.15 = 43,153.13/x
  3. Step 3: Cross multiply
    78,963.12x = 108,969.15 × 43,153.13
  4. Step 4: Simplify right side
    78,963.12x = 4,702,359,223.32
  5. Step 5: Solve for x
    x = 4,702,359,223.32/78,963.12
  6. Step 6: Final answer
    x = 59,551.34

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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.