Home / 78,962.56-108,965.10-43,153.78

Finding the Fourth Proportional to 78,962.56, 108,965.10 and 43,153.78

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Solution

The fourth proportional to 78,962.56, 108,965.10 and 43,153.78 is: 59,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,962.56 : 108,965.10 = 43,153.78 : x
  2. Step 2: Convert to fraction form
    78,962.56/108,965.10 = 43,153.78/x
  3. Step 3: Cross multiply
    78,962.56x = 108,965.10 × 43,153.78
  4. Step 4: Simplify right side
    78,962.56x = 4,702,255,953.08
  5. Step 5: Solve for x
    x = 4,702,255,953.08/78,962.56
  6. Step 6: Final answer
    x = 59,550.45

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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.