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Finding the Fourth Proportional to 70,376.88, 97,140.60 and 40,178.88

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Solution

The fourth proportional to 70,376.88, 97,140.60 and 40,178.88 is: 55,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,376.88 : 97,140.60 = 40,178.88 : x
  2. Step 2: Convert to fraction form
    70,376.88/97,140.60 = 40,178.88/x
  3. Step 3: Cross multiply
    70,376.88x = 97,140.60 × 40,178.88
  4. Step 4: Simplify right side
    70,376.88x = 3,903,000,510.53
  5. Step 5: Solve for x
    x = 3,903,000,510.53/70,376.88
  6. Step 6: Final answer
    x = 55,458.56

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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.