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Finding the Fourth Proportional to 75,955.64, 104,818.79 and 42,421.64

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Solution

The fourth proportional to 75,955.64, 104,818.79 and 42,421.64 is: 58,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,955.64 : 104,818.79 = 42,421.64 : x
  2. Step 2: Convert to fraction form
    75,955.64/104,818.79 = 42,421.64/x
  3. Step 3: Cross multiply
    75,955.64x = 104,818.79 × 42,421.64
  4. Step 4: Simplify right side
    75,955.64x = 4,446,585,146.18
  5. Step 5: Solve for x
    x = 4,446,585,146.18/75,955.64
  6. Step 6: Final answer
    x = 58,541.87

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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.