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Finding the Fourth Proportional to 70,071.77, 96,701.31 and 39,856.32

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Solution

The fourth proportional to 70,071.77, 96,701.31 and 39,856.32 is: 55,003.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,071.77 : 96,701.31 = 39,856.32 : x
  2. Step 2: Convert to fraction form
    70,071.77/96,701.31 = 39,856.32/x
  3. Step 3: Cross multiply
    70,071.77x = 96,701.31 × 39,856.32
  4. Step 4: Simplify right side
    70,071.77x = 3,854,157,779.68
  5. Step 5: Solve for x
    x = 3,854,157,779.68/70,071.77
  6. Step 6: Final answer
    x = 55,003.00

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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.