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Finding the Fourth Proportional to 37,439,687.80, 56,159,531.70 and 13,205,978.20

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Solution

The fourth proportional to 37,439,687.80, 56,159,531.70 and 13,205,978.20 is: 19,808,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,439,687.80 : 56,159,531.70 = 13,205,978.20 : x
  2. Step 2: Convert to fraction form
    37,439,687.80/56,159,531.70 = 13,205,978.20/x
  3. Step 3: Cross multiply
    37,439,687.80x = 56,159,531.70 × 13,205,978.20
  4. Step 4: Simplify right side
    37,439,687.80x = 741,641,551,352,409
  5. Step 5: Solve for x
    x = 741,641,551,352,409/37,439,687.80
  6. Step 6: Final answer
    x = 19,808,967.30

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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.