Home / 77,279,814.40-115,919,721.60-58,006,220.80

Finding the Fourth Proportional to 77,279,814.40, 115,919,721.60 and 58,006,220.80

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Solution

The fourth proportional to 77,279,814.40, 115,919,721.60 and 58,006,220.80 is: 87,009,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279,814.40 : 115,919,721.60 = 58,006,220.80 : x
  2. Step 2: Convert to fraction form
    77,279,814.40/115,919,721.60 = 58,006,220.80/x
  3. Step 3: Cross multiply
    77,279,814.40x = 115,919,721.60 × 58,006,220.80
  4. Step 4: Simplify right side
    77,279,814.40x = 6,724,064,966,204,129
  5. Step 5: Solve for x
    x = 6,724,064,966,204,129/77,279,814.40
  6. Step 6: Final answer
    x = 87,009,331.20

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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.