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Finding the Fourth Proportional to 75,320.68, 112,348.80 and 69,200.44

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Solution

The fourth proportional to 75,320.68, 112,348.80 and 69,200.44 is: 103,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,320.68 : 112,348.80 = 69,200.44 : x
  2. Step 2: Convert to fraction form
    75,320.68/112,348.80 = 69,200.44/x
  3. Step 3: Cross multiply
    75,320.68x = 112,348.80 × 69,200.44
  4. Step 4: Simplify right side
    75,320.68x = 7,774,586,393.47
  5. Step 5: Solve for x
    x = 7,774,586,393.47/75,320.68
  6. Step 6: Final answer
    x = 103,219.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.