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Finding the Fourth Proportional to 62,970.36, 86,900.23 and 34,290.87

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Solution

The fourth proportional to 62,970.36, 86,900.23 and 34,290.87 is: 47,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,970.36 : 86,900.23 = 34,290.87 : x
  2. Step 2: Convert to fraction form
    62,970.36/86,900.23 = 34,290.87/x
  3. Step 3: Cross multiply
    62,970.36x = 86,900.23 × 34,290.87
  4. Step 4: Simplify right side
    62,970.36x = 2,979,884,489.90
  5. Step 5: Solve for x
    x = 2,979,884,489.90/62,970.36
  6. Step 6: Final answer
    x = 47,322.02

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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.