Home / 57,091,021.57-78,785,685.79-30,985,539.40

Finding the Fourth Proportional to 57,091,021.57, 78,785,685.79 and 30,985,539.40

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Solution

The fourth proportional to 57,091,021.57, 78,785,685.79 and 30,985,539.40 is: 42,760,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091,021.57 : 78,785,685.79 = 30,985,539.40 : x
  2. Step 2: Convert to fraction form
    57,091,021.57/78,785,685.79 = 30,985,539.40/x
  3. Step 3: Cross multiply
    57,091,021.57x = 78,785,685.79 × 30,985,539.40
  4. Step 4: Simplify right side
    57,091,021.57x = 2,441,216,970,927,637
  5. Step 5: Solve for x
    x = 2,441,216,970,927,637/57,091,021.57
  6. Step 6: Final answer
    x = 42,760,085.63

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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.