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Finding the Fourth Proportional to 70,697.84, 97,569.72 and 40,485.56

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Solution

The fourth proportional to 70,697.84, 97,569.72 and 40,485.56 is: 55,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,697.84 : 97,569.72 = 40,485.56 : x
  2. Step 2: Convert to fraction form
    70,697.84/97,569.72 = 40,485.56/x
  3. Step 3: Cross multiply
    70,697.84x = 97,569.72 × 40,485.56
  4. Step 4: Simplify right side
    70,697.84x = 3,950,164,753.24
  5. Step 5: Solve for x
    x = 3,950,164,753.24/70,697.84
  6. Step 6: Final answer
    x = 55,873.91

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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.