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Finding the Fourth Proportional to 62,388.48, 86,070.40 and 45,355.40

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Solution

The fourth proportional to 62,388.48, 86,070.40 and 45,355.40 is: 62,571.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,388.48 : 86,070.40 = 45,355.40 : x
  2. Step 2: Convert to fraction form
    62,388.48/86,070.40 = 45,355.40/x
  3. Step 3: Cross multiply
    62,388.48x = 86,070.40 × 45,355.40
  4. Step 4: Simplify right side
    62,388.48x = 3,903,757,420.16
  5. Step 5: Solve for x
    x = 3,903,757,420.16/62,388.48
  6. Step 6: Final answer
    x = 62,571.77

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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.