Home / 77,953.43-116,918.40-21,787.64

Finding the Fourth Proportional to 77,953.43, 116,918.40 and 21,787.64

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Solution

The fourth proportional to 77,953.43, 116,918.40 and 21,787.64 is: 32,678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,953.43 : 116,918.40 = 21,787.64 : x
  2. Step 2: Convert to fraction form
    77,953.43/116,918.40 = 21,787.64/x
  3. Step 3: Cross multiply
    77,953.43x = 116,918.40 × 21,787.64
  4. Step 4: Simplify right side
    77,953.43x = 2,547,376,008.58
  5. Step 5: Solve for x
    x = 2,547,376,008.58/77,953.43
  6. Step 6: Final answer
    x = 32,678.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.