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Finding the Fourth Proportional to 70,636, 97,472.82 and 38,798.32

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Solution

The fourth proportional to 70,636, 97,472.82 and 38,798.32 is: 53,539.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,636 : 97,472.82 = 38,798.32 : x
  2. Step 2: Convert to fraction form
    70,636/97,472.82 = 38,798.32/x
  3. Step 3: Cross multiply
    70,636x = 97,472.82 × 38,798.32
  4. Step 4: Simplify right side
    70,636x = 3,781,781,661.66
  5. Step 5: Solve for x
    x = 3,781,781,661.66/70,636
  6. Step 6: Final answer
    x = 53,539.01

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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.