Home / 97,830.40-135,006.45-55,397.20

Finding the Fourth Proportional to 97,830.40, 135,006.45 and 55,397.20

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Solution

The fourth proportional to 97,830.40, 135,006.45 and 55,397.20 is: 76,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,830.40 : 135,006.45 = 55,397.20 : x
  2. Step 2: Convert to fraction form
    97,830.40/135,006.45 = 55,397.20/x
  3. Step 3: Cross multiply
    97,830.40x = 135,006.45 × 55,397.20
  4. Step 4: Simplify right side
    97,830.40x = 7,478,979,311.94
  5. Step 5: Solve for x
    x = 7,478,979,311.94/97,830.40
  6. Step 6: Final answer
    x = 76,448.42

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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.