Home / 77,777,021.39-107,331,036.76-42,494,068.63

Finding the Fourth Proportional to 77,777,021.39, 107,331,036.76 and 42,494,068.63

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Solution

The fourth proportional to 77,777,021.39, 107,331,036.76 and 42,494,068.63 is: 58,641,130.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,777,021.39 : 107,331,036.76 = 42,494,068.63 : x
  2. Step 2: Convert to fraction form
    77,777,021.39/107,331,036.76 = 42,494,068.63/x
  3. Step 3: Cross multiply
    77,777,021.39x = 107,331,036.76 × 42,494,068.63
  4. Step 4: Simplify right side
    77,777,021.39x = 4,560,932,442,395,775
  5. Step 5: Solve for x
    x = 4,560,932,442,395,775/77,777,021.39
  6. Step 6: Final answer
    x = 58,641,130.26

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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.