Home / 56,893,389.89-78,512,876.30-30,787,907.45

Finding the Fourth Proportional to 56,893,389.89, 78,512,876.30 and 30,787,907.45

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Solution

The fourth proportional to 56,893,389.89, 78,512,876.30 and 30,787,907.45 is: 42,487,311.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,893,389.89 : 78,512,876.30 = 30,787,907.45 : x
  2. Step 2: Convert to fraction form
    56,893,389.89/78,512,876.30 = 30,787,907.45/x
  3. Step 3: Cross multiply
    56,893,389.89x = 78,512,876.30 × 30,787,907.45
  4. Step 4: Simplify right side
    56,893,389.89x = 2,417,247,168,842,103.50
  5. Step 5: Solve for x
    x = 2,417,247,168,842,103.50/56,893,389.89
  6. Step 6: Final answer
    x = 42,487,311.33

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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.