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Finding the Fourth Proportional to 71,925.71, 99,267.12 and 41,720.40

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Solution

The fourth proportional to 71,925.71, 99,267.12 and 41,720.40 is: 57,579.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,925.71 : 99,267.12 = 41,720.40 : x
  2. Step 2: Convert to fraction form
    71,925.71/99,267.12 = 41,720.40/x
  3. Step 3: Cross multiply
    71,925.71x = 99,267.12 × 41,720.40
  4. Step 4: Simplify right side
    71,925.71x = 4,141,463,953.25
  5. Step 5: Solve for x
    x = 4,141,463,953.25/71,925.71
  6. Step 6: Final answer
    x = 57,579.75

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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.