Home / 77,375,681.42-106,778,439.69-42,567,624.86

Finding the Fourth Proportional to 77,375,681.42, 106,778,439.69 and 42,567,624.86

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Solution

The fourth proportional to 77,375,681.42, 106,778,439.69 and 42,567,624.86 is: 58,743,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,375,681.42 : 106,778,439.69 = 42,567,624.86 : x
  2. Step 2: Convert to fraction form
    77,375,681.42/106,778,439.69 = 42,567,624.86/x
  3. Step 3: Cross multiply
    77,375,681.42x = 106,778,439.69 × 42,567,624.86
  4. Step 4: Simplify right side
    77,375,681.42x = 4,545,304,563,860,055
  5. Step 5: Solve for x
    x = 4,545,304,563,860,055/77,375,681.42
  6. Step 6: Final answer
    x = 58,743,321.94

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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.