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Finding the Fourth Proportional to 62,970.31, 86,898.88 and 34,289.52

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Solution

The fourth proportional to 62,970.31, 86,898.88 and 34,289.52 is: 47,319.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,970.31 : 86,898.88 = 34,289.52 : x
  2. Step 2: Convert to fraction form
    62,970.31/86,898.88 = 34,289.52/x
  3. Step 3: Cross multiply
    62,970.31x = 86,898.88 × 34,289.52
  4. Step 4: Simplify right side
    62,970.31x = 2,979,720,883.74
  5. Step 5: Solve for x
    x = 2,979,720,883.74/62,970.31
  6. Step 6: Final answer
    x = 47,319.46

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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.