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Finding the Fourth Proportional to 70,840.40, 97,758.24 and 39,008.48

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Solution

The fourth proportional to 70,840.40, 97,758.24 and 39,008.48 is: 53,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,840.40 : 97,758.24 = 39,008.48 : x
  2. Step 2: Convert to fraction form
    70,840.40/97,758.24 = 39,008.48/x
  3. Step 3: Cross multiply
    70,840.40x = 97,758.24 × 39,008.48
  4. Step 4: Simplify right side
    70,840.40x = 3,813,400,349.88
  5. Step 5: Solve for x
    x = 3,813,400,349.88/70,840.40
  6. Step 6: Final answer
    x = 53,830.87

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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.