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Finding the Fourth Proportional to 70,785.60, 97,684.82 and 38,955.23

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Solution

The fourth proportional to 70,785.60, 97,684.82 and 38,955.23 is: 53,758.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,785.60 : 97,684.82 = 38,955.23 : x
  2. Step 2: Convert to fraction form
    70,785.60/97,684.82 = 38,955.23/x
  3. Step 3: Cross multiply
    70,785.60x = 97,684.82 × 38,955.23
  4. Step 4: Simplify right side
    70,785.60x = 3,805,333,947.41
  5. Step 5: Solve for x
    x = 3,805,333,947.41/70,785.60
  6. Step 6: Final answer
    x = 53,758.59

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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.