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Finding the Fourth Proportional to 75,300.77, 112,335.99 and 69,931.68

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Solution

The fourth proportional to 75,300.77, 112,335.99 and 69,931.68 is: 104,326.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,300.77 : 112,335.99 = 69,931.68 : x
  2. Step 2: Convert to fraction form
    75,300.77/112,335.99 = 69,931.68/x
  3. Step 3: Cross multiply
    75,300.77x = 112,335.99 × 69,931.68
  4. Step 4: Simplify right side
    75,300.77x = 7,855,844,505.16
  5. Step 5: Solve for x
    x = 7,855,844,505.16/75,300.77
  6. Step 6: Final answer
    x = 104,326.22

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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.