Home / 77,129,531.72-115,633,423.72-38,241,170.64

Finding the Fourth Proportional to 77,129,531.72, 115,633,423.72 and 38,241,170.64

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Solution

The fourth proportional to 77,129,531.72, 115,633,423.72 and 38,241,170.64 is: 57,331,574.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,129,531.72 : 115,633,423.72 = 38,241,170.64 : x
  2. Step 2: Convert to fraction form
    77,129,531.72/115,633,423.72 = 38,241,170.64/x
  3. Step 3: Cross multiply
    77,129,531.72x = 115,633,423.72 × 38,241,170.64
  4. Step 4: Simplify right side
    77,129,531.72x = 4,421,957,488,163,943.50
  5. Step 5: Solve for x
    x = 4,421,957,488,163,943.50/77,129,531.72
  6. Step 6: Final answer
    x = 57,331,574.42

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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.