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Finding the Fourth Proportional to 70,774.80, 97,670.30 and 40,562.76

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Solution

The fourth proportional to 70,774.80, 97,670.30 and 40,562.76 is: 55,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,774.80 : 97,670.30 = 40,562.76 : x
  2. Step 2: Convert to fraction form
    70,774.80/97,670.30 = 40,562.76/x
  3. Step 3: Cross multiply
    70,774.80x = 97,670.30 × 40,562.76
  4. Step 4: Simplify right side
    70,774.80x = 3,961,776,735.21
  5. Step 5: Solve for x
    x = 3,961,776,735.21/70,774.80
  6. Step 6: Final answer
    x = 55,977.22

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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.