Home / 88,640.10-133,057.35-55,397.70

Finding the Fourth Proportional to 88,640.10, 133,057.35 and 55,397.70

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Solution

The fourth proportional to 88,640.10, 133,057.35 and 55,397.70 is: 83,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,640.10 : 133,057.35 = 55,397.70 : x
  2. Step 2: Convert to fraction form
    88,640.10/133,057.35 = 55,397.70/x
  3. Step 3: Cross multiply
    88,640.10x = 133,057.35 × 55,397.70
  4. Step 4: Simplify right side
    88,640.10x = 7,371,071,158.10
  5. Step 5: Solve for x
    x = 7,371,071,158.10/88,640.10
  6. Step 6: Final answer
    x = 83,157.30

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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.