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Finding the Fourth Proportional to 90,347.40, 124,798.32 and 69,385.68

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Solution

The fourth proportional to 90,347.40, 124,798.32 and 69,385.68 is: 95,843.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,347.40 : 124,798.32 = 69,385.68 : x
  2. Step 2: Convert to fraction form
    90,347.40/124,798.32 = 69,385.68/x
  3. Step 3: Cross multiply
    90,347.40x = 124,798.32 × 69,385.68
  4. Step 4: Simplify right side
    90,347.40x = 8,659,216,296.06
  5. Step 5: Solve for x
    x = 8,659,216,296.06/90,347.40
  6. Step 6: Final answer
    x = 95,843.56

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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.