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Finding the Fourth Proportional to 72,806.70, 100,417.02 and 63,839.16

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Solution

The fourth proportional to 72,806.70, 100,417.02 and 63,839.16 is: 88,048.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,806.70 : 100,417.02 = 63,839.16 : x
  2. Step 2: Convert to fraction form
    72,806.70/100,417.02 = 63,839.16/x
  3. Step 3: Cross multiply
    72,806.70x = 100,417.02 × 63,839.16
  4. Step 4: Simplify right side
    72,806.70x = 6,410,538,206.50
  5. Step 5: Solve for x
    x = 6,410,538,206.50/72,806.70
  6. Step 6: Final answer
    x = 88,048.74

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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.