Home / 86,911,929.70-130,383,640.95-43,672,315.30

Finding the Fourth Proportional to 86,911,929.70, 130,383,640.95 and 43,672,315.30

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Solution

The fourth proportional to 86,911,929.70, 130,383,640.95 and 43,672,315.30 is: 65,516,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,911,929.70 : 130,383,640.95 = 43,672,315.30 : x
  2. Step 2: Convert to fraction form
    86,911,929.70/130,383,640.95 = 43,672,315.30/x
  3. Step 3: Cross multiply
    86,911,929.70x = 130,383,640.95 × 43,672,315.30
  4. Step 4: Simplify right side
    86,911,929.70x = 5,694,155,477,530,391
  5. Step 5: Solve for x
    x = 5,694,155,477,530,391/86,911,929.70
  6. Step 6: Final answer
    x = 65,516,385.35

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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.