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Finding the Fourth Proportional to 70,654,040.88, 105,872,890.88 and 47,539,359.02

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Solution

The fourth proportional to 70,654,040.88, 105,872,890.88 and 47,539,359.02 is: 71,236,256.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,654,040.88 : 105,872,890.88 = 47,539,359.02 : x
  2. Step 2: Convert to fraction form
    70,654,040.88/105,872,890.88 = 47,539,359.02/x
  3. Step 3: Cross multiply
    70,654,040.88x = 105,872,890.88 × 47,539,359.02
  4. Step 4: Simplify right side
    70,654,040.88x = 5,033,129,370,029,604
  5. Step 5: Solve for x
    x = 5,033,129,370,029,604/70,654,040.88
  6. Step 6: Final answer
    x = 71,236,256.37

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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.