Home / 71,423.15-107,157.36-42,991.24

Finding the Fourth Proportional to 71,423.15, 107,157.36 and 42,991.24

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Solution

The fourth proportional to 71,423.15, 107,157.36 and 42,991.24 is: 64,500.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,423.15 : 107,157.36 = 42,991.24 : x
  2. Step 2: Convert to fraction form
    71,423.15/107,157.36 = 42,991.24/x
  3. Step 3: Cross multiply
    71,423.15x = 107,157.36 × 42,991.24
  4. Step 4: Simplify right side
    71,423.15x = 4,606,827,781.53
  5. Step 5: Solve for x
    x = 4,606,827,781.53/71,423.15
  6. Step 6: Final answer
    x = 64,500.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.