Home / 77,970,297.60-107,600,279.04-42,687,509.76

Finding the Fourth Proportional to 77,970,297.60, 107,600,279.04 and 42,687,509.76

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Solution

The fourth proportional to 77,970,297.60, 107,600,279.04 and 42,687,509.76 is: 58,909,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,970,297.60 : 107,600,279.04 = 42,687,509.76 : x
  2. Step 2: Convert to fraction form
    77,970,297.60/107,600,279.04 = 42,687,509.76/x
  3. Step 3: Cross multiply
    77,970,297.60x = 107,600,279.04 × 42,687,509.76
  4. Step 4: Simplify right side
    77,970,297.60x = 4,593,187,961,698,723
  5. Step 5: Solve for x
    x = 4,593,187,961,698,723/77,970,297.60
  6. Step 6: Final answer
    x = 58,909,457.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.