Home / 72,686,333.72-100,308,345.94-39,646,591.46

Finding the Fourth Proportional to 72,686,333.72, 100,308,345.94 and 39,646,591.46

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Solution

The fourth proportional to 72,686,333.72, 100,308,345.94 and 39,646,591.46 is: 54,712,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,333.72 : 100,308,345.94 = 39,646,591.46 : x
  2. Step 2: Convert to fraction form
    72,686,333.72/100,308,345.94 = 39,646,591.46/x
  3. Step 3: Cross multiply
    72,686,333.72x = 100,308,345.94 × 39,646,591.46
  4. Step 4: Simplify right side
    72,686,333.72x = 3,976,884,011,511,529.50
  5. Step 5: Solve for x
    x = 3,976,884,011,511,529.50/72,686,333.72
  6. Step 6: Final answer
    x = 54,712,953.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.