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Finding the Fourth Proportional to 61,880.64, 85,388.76 and 35,018.88

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Solution

The fourth proportional to 61,880.64, 85,388.76 and 35,018.88 is: 48,322.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,880.64 : 85,388.76 = 35,018.88 : x
  2. Step 2: Convert to fraction form
    61,880.64/85,388.76 = 35,018.88/x
  3. Step 3: Cross multiply
    61,880.64x = 85,388.76 × 35,018.88
  4. Step 4: Simplify right side
    61,880.64x = 2,990,218,739.79
  5. Step 5: Solve for x
    x = 2,990,218,739.79/61,880.64
  6. Step 6: Final answer
    x = 48,322.36

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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.