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Finding the Fourth Proportional to 74,889,739.20, 112,334,608.80 and 31,751,601.60

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Solution

The fourth proportional to 74,889,739.20, 112,334,608.80 and 31,751,601.60 is: 47,627,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,889,739.20 : 112,334,608.80 = 31,751,601.60 : x
  2. Step 2: Convert to fraction form
    74,889,739.20/112,334,608.80 = 31,751,601.60/x
  3. Step 3: Cross multiply
    74,889,739.20x = 112,334,608.80 × 31,751,601.60
  4. Step 4: Simplify right side
    74,889,739.20x = 3,566,803,744,509,454
  5. Step 5: Solve for x
    x = 3,566,803,744,509,454/74,889,739.20
  6. Step 6: Final answer
    x = 47,627,402.40

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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.