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Finding the Fourth Proportional to 71,773,642.80, 107,685,347.40 and 31,413,092.40

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Solution

The fourth proportional to 71,773,642.80, 107,685,347.40 and 31,413,092.40 is: 47,130,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,773,642.80 : 107,685,347.40 = 31,413,092.40 : x
  2. Step 2: Convert to fraction form
    71,773,642.80/107,685,347.40 = 31,413,092.40/x
  3. Step 3: Cross multiply
    71,773,642.80x = 107,685,347.40 × 31,413,092.40
  4. Step 4: Simplify right side
    71,773,642.80x = 3,382,729,768,002,300
  5. Step 5: Solve for x
    x = 3,382,729,768,002,300/71,773,642.80
  6. Step 6: Final answer
    x = 47,130,529.20

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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.