Home / 72,758,543.63-109,138,996.42-20,943,833.45

Finding the Fourth Proportional to 72,758,543.63, 109,138,996.42 and 20,943,833.45

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Solution

The fourth proportional to 72,758,543.63, 109,138,996.42 and 20,943,833.45 is: 31,416,090.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,758,543.63 : 109,138,996.42 = 20,943,833.45 : x
  2. Step 2: Convert to fraction form
    72,758,543.63/109,138,996.42 = 20,943,833.45/x
  3. Step 3: Cross multiply
    72,758,543.63x = 109,138,996.42 × 20,943,833.45
  4. Step 4: Simplify right side
    72,758,543.63x = 2,285,788,963,322,572
  5. Step 5: Solve for x
    x = 2,285,788,963,322,572/72,758,543.63
  6. Step 6: Final answer
    x = 31,416,090.12

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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.