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Finding the Fourth Proportional to 71,672.79, 107,050.85 and 64,908.30

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Solution

The fourth proportional to 71,672.79, 107,050.85 and 64,908.30 is: 96,947.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,672.79 : 107,050.85 = 64,908.30 : x
  2. Step 2: Convert to fraction form
    71,672.79/107,050.85 = 64,908.30/x
  3. Step 3: Cross multiply
    71,672.79x = 107,050.85 × 64,908.30
  4. Step 4: Simplify right side
    71,672.79x = 6,948,488,362.51
  5. Step 5: Solve for x
    x = 6,948,488,362.51/71,672.79
  6. Step 6: Final answer
    x = 96,947.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.