Home / 86,028,128.70-129,024,259.65-31,466,415.30

Finding the Fourth Proportional to 86,028,128.70, 129,024,259.65 and 31,466,415.30

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Solution

The fourth proportional to 86,028,128.70, 129,024,259.65 and 31,466,415.30 is: 47,193,063.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,028,128.70 : 129,024,259.65 = 31,466,415.30 : x
  2. Step 2: Convert to fraction form
    86,028,128.70/129,024,259.65 = 31,466,415.30/x
  3. Step 3: Cross multiply
    86,028,128.70x = 129,024,259.65 × 31,466,415.30
  4. Step 4: Simplify right side
    86,028,128.70x = 4,059,930,937,921,933
  5. Step 5: Solve for x
    x = 4,059,930,937,921,933/86,028,128.70
  6. Step 6: Final answer
    x = 47,193,063.47

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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.