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Finding the Fourth Proportional to 70,038.81, 96,645.15 and 39,824.19

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Solution

The fourth proportional to 70,038.81, 96,645.15 and 39,824.19 is: 54,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,038.81 : 96,645.15 = 39,824.19 : x
  2. Step 2: Convert to fraction form
    70,038.81/96,645.15 = 39,824.19/x
  3. Step 3: Cross multiply
    70,038.81x = 96,645.15 × 39,824.19
  4. Step 4: Simplify right side
    70,038.81x = 3,848,814,816.18
  5. Step 5: Solve for x
    x = 3,848,814,816.18/70,038.81
  6. Step 6: Final answer
    x = 54,952.60

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1.5x scale

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.