Home / 72,686,330.71-100,308,341.79-39,646,588.46

Finding the Fourth Proportional to 72,686,330.71, 100,308,341.79 and 39,646,588.46

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Solution

The fourth proportional to 72,686,330.71, 100,308,341.79 and 39,646,588.46 is: 54,712,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,330.71 : 100,308,341.79 = 39,646,588.46 : x
  2. Step 2: Convert to fraction form
    72,686,330.71/100,308,341.79 = 39,646,588.46/x
  3. Step 3: Cross multiply
    72,686,330.71x = 100,308,341.79 × 39,646,588.46
  4. Step 4: Simplify right side
    72,686,330.71x = 3,976,883,545,551,608
  5. Step 5: Solve for x
    x = 3,976,883,545,551,608/72,686,330.71
  6. Step 6: Final answer
    x = 54,712,949.56

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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.