Home / 81,875.68-112,979.28-46,078

Finding the Fourth Proportional to 81,875.68, 112,979.28 and 46,078

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Solution

The fourth proportional to 81,875.68, 112,979.28 and 46,078 is: 63,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,875.68 : 112,979.28 = 46,078 : x
  2. Step 2: Convert to fraction form
    81,875.68/112,979.28 = 46,078/x
  3. Step 3: Cross multiply
    81,875.68x = 112,979.28 × 46,078
  4. Step 4: Simplify right side
    81,875.68x = 5,205,859,263.84
  5. Step 5: Solve for x
    x = 5,205,859,263.84/81,875.68
  6. Step 6: Final answer
    x = 63,582.49

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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.