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Finding the Fourth Proportional to 69,970.79, 96,558.95 and 38,139.01

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Solution

The fourth proportional to 69,970.79, 96,558.95 and 38,139.01 is: 52,631.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,970.79 : 96,558.95 = 38,139.01 : x
  2. Step 2: Convert to fraction form
    69,970.79/96,558.95 = 38,139.01/x
  3. Step 3: Cross multiply
    69,970.79x = 96,558.95 × 38,139.01
  4. Step 4: Simplify right side
    69,970.79x = 3,682,662,613.59
  5. Step 5: Solve for x
    x = 3,682,662,613.59/69,970.79
  6. Step 6: Final answer
    x = 52,631.43

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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.