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Finding the Fourth Proportional to 70,392.76, 97,118.24 and 40,156.80

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Solution

The fourth proportional to 70,392.76, 97,118.24 and 40,156.80 is: 55,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,392.76 : 97,118.24 = 40,156.80 : x
  2. Step 2: Convert to fraction form
    70,392.76/97,118.24 = 40,156.80/x
  3. Step 3: Cross multiply
    70,392.76x = 97,118.24 × 40,156.80
  4. Step 4: Simplify right side
    70,392.76x = 3,899,957,175.05
  5. Step 5: Solve for x
    x = 3,899,957,175.05/70,392.76
  6. Step 6: Final answer
    x = 55,402.82

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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.