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Finding the Fourth Proportional to 70,965.84, 97,929.12 and 39,134.16

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Solution

The fourth proportional to 70,965.84, 97,929.12 and 39,134.16 is: 54,003.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,965.84 : 97,929.12 = 39,134.16 : x
  2. Step 2: Convert to fraction form
    70,965.84/97,929.12 = 39,134.16/x
  3. Step 3: Cross multiply
    70,965.84x = 97,929.12 × 39,134.16
  4. Step 4: Simplify right side
    70,965.84x = 3,832,373,850.74
  5. Step 5: Solve for x
    x = 3,832,373,850.74/70,965.84
  6. Step 6: Final answer
    x = 54,003.08

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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.