Home / 57,246,320.05-78,999,861.88-31,140,775.61

Finding the Fourth Proportional to 57,246,320.05, 78,999,861.88 and 31,140,775.61

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Solution

The fourth proportional to 57,246,320.05, 78,999,861.88 and 31,140,775.61 is: 42,974,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,246,320.05 : 78,999,861.88 = 31,140,775.61 : x
  2. Step 2: Convert to fraction form
    57,246,320.05/78,999,861.88 = 31,140,775.61/x
  3. Step 3: Cross multiply
    57,246,320.05x = 78,999,861.88 × 31,140,775.61
  4. Step 4: Simplify right side
    57,246,320.05x = 2,460,116,972,026,072.50
  5. Step 5: Solve for x
    x = 2,460,116,972,026,072.50/57,246,320.05
  6. Step 6: Final answer
    x = 42,974,237.82

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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.