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Finding the Fourth Proportional to 97,061.40, 145,612.80 and 54,961.20

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Solution

The fourth proportional to 97,061.40, 145,612.80 and 54,961.20 is: 82,453.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,061.40 : 145,612.80 = 54,961.20 : x
  2. Step 2: Convert to fraction form
    97,061.40/145,612.80 = 54,961.20/x
  3. Step 3: Cross multiply
    97,061.40x = 145,612.80 × 54,961.20
  4. Step 4: Simplify right side
    97,061.40x = 8,003,054,223.36
  5. Step 5: Solve for x
    x = 8,003,054,223.36/97,061.40
  6. Step 6: Final answer
    x = 82,453.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.