Home / 72,909,637.60-109,364,456.40-71,775,896.80

Finding the Fourth Proportional to 72,909,637.60, 109,364,456.40 and 71,775,896.80

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Solution

The fourth proportional to 72,909,637.60, 109,364,456.40 and 71,775,896.80 is: 107,663,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,909,637.60 : 109,364,456.40 = 71,775,896.80 : x
  2. Step 2: Convert to fraction form
    72,909,637.60/109,364,456.40 = 71,775,896.80/x
  3. Step 3: Cross multiply
    72,909,637.60x = 109,364,456.40 × 71,775,896.80
  4. Step 4: Simplify right side
    72,909,637.60x = 7,849,731,936,154,500
  5. Step 5: Solve for x
    x = 7,849,731,936,154,500/72,909,637.60
  6. Step 6: Final answer
    x = 107,663,845.20

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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.