Home / 75,772.80-104,317.20-72,032.40

Finding the Fourth Proportional to 75,772.80, 104,317.20 and 72,032.40

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Solution

The fourth proportional to 75,772.80, 104,317.20 and 72,032.40 is: 99,167.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,772.80 : 104,317.20 = 72,032.40 : x
  2. Step 2: Convert to fraction form
    75,772.80/104,317.20 = 72,032.40/x
  3. Step 3: Cross multiply
    75,772.80x = 104,317.20 × 72,032.40
  4. Step 4: Simplify right side
    75,772.80x = 7,514,218,277.28
  5. Step 5: Solve for x
    x = 7,514,218,277.28/75,772.80
  6. Step 6: Final answer
    x = 99,167.75

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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.