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Finding the Fourth Proportional to 69,643.80, 96,046.56 and 56,210.76

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Solution

The fourth proportional to 69,643.80, 96,046.56 and 56,210.76 is: 77,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,643.80 : 96,046.56 = 56,210.76 : x
  2. Step 2: Convert to fraction form
    69,643.80/96,046.56 = 56,210.76/x
  3. Step 3: Cross multiply
    69,643.80x = 96,046.56 × 56,210.76
  4. Step 4: Simplify right side
    69,643.80x = 5,398,850,132.99
  5. Step 5: Solve for x
    x = 5,398,850,132.99/69,643.80
  6. Step 6: Final answer
    x = 77,520.90

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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.