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Finding the Fourth Proportional to 69,639.80, 96,041.04 and 56,206.76

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Solution

The fourth proportional to 69,639.80, 96,041.04 and 56,206.76 is: 77,515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,639.80 : 96,041.04 = 56,206.76 : x
  2. Step 2: Convert to fraction form
    69,639.80/96,041.04 = 56,206.76/x
  3. Step 3: Cross multiply
    69,639.80x = 96,041.04 × 56,206.76
  4. Step 4: Simplify right side
    69,639.80x = 5,398,155,685.43
  5. Step 5: Solve for x
    x = 5,398,155,685.43/69,639.80
  6. Step 6: Final answer
    x = 77,515.38

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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.