Home / 78,101,460.23-117,069,592.01-28,885,684.87

Finding the Fourth Proportional to 78,101,460.23, 117,069,592.01 and 28,885,684.87

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Solution

The fourth proportional to 78,101,460.23, 117,069,592.01 and 28,885,684.87 is: 43,297,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,101,460.23 : 117,069,592.01 = 28,885,684.87 : x
  2. Step 2: Convert to fraction form
    78,101,460.23/117,069,592.01 = 28,885,684.87/x
  3. Step 3: Cross multiply
    78,101,460.23x = 117,069,592.01 × 28,885,684.87
  4. Step 4: Simplify right side
    78,101,460.23x = 3,381,635,342,074,982
  5. Step 5: Solve for x
    x = 3,381,635,342,074,982/78,101,460.23
  6. Step 6: Final answer
    x = 43,297,978.45

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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.