Home / 86,633,132.77-129,948,442.83-21,054,756.79

Finding the Fourth Proportional to 86,633,132.77, 129,948,442.83 and 21,054,756.79

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Solution

The fourth proportional to 86,633,132.77, 129,948,442.83 and 21,054,756.79 is: 31,581,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,633,132.77 : 129,948,442.83 = 21,054,756.79 : x
  2. Step 2: Convert to fraction form
    86,633,132.77/129,948,442.83 = 21,054,756.79/x
  3. Step 3: Cross multiply
    86,633,132.77x = 129,948,442.83 × 21,054,756.79
  4. Step 4: Simplify right side
    86,633,132.77x = 2,736,032,859,024,869
  5. Step 5: Solve for x
    x = 2,736,032,859,024,869/86,633,132.77
  6. Step 6: Final answer
    x = 31,581,829.86

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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.