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Finding the Fourth Proportional to 62,420.31, 86,148 and 35,572.50

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Solution

The fourth proportional to 62,420.31, 86,148 and 35,572.50 is: 49,094.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,420.31 : 86,148 = 35,572.50 : x
  2. Step 2: Convert to fraction form
    62,420.31/86,148 = 35,572.50/x
  3. Step 3: Cross multiply
    62,420.31x = 86,148 × 35,572.50
  4. Step 4: Simplify right side
    62,420.31x = 3,064,499,730
  5. Step 5: Solve for x
    x = 3,064,499,730/62,420.31
  6. Step 6: Final answer
    x = 49,094.59

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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.