Home / 86,612,036.63-129,916,934.10-21,033,711.68

Finding the Fourth Proportional to 86,612,036.63, 129,916,934.10 and 21,033,711.68

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Solution

The fourth proportional to 86,612,036.63, 129,916,934.10 and 21,033,711.68 is: 31,550,295.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,612,036.63 : 129,916,934.10 = 21,033,711.68 : x
  2. Step 2: Convert to fraction form
    86,612,036.63/129,916,934.10 = 21,033,711.68/x
  3. Step 3: Cross multiply
    86,612,036.63x = 129,916,934.10 × 21,033,711.68
  4. Step 4: Simplify right side
    86,612,036.63x = 2,732,635,333,559,375.50
  5. Step 5: Solve for x
    x = 2,732,635,333,559,375.50/86,612,036.63
  6. Step 6: Final answer
    x = 31,550,295.32

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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.