Home / 72,259,681.50-108,368,264.61-21,129,546.06

Finding the Fourth Proportional to 72,259,681.50, 108,368,264.61 and 21,129,546.06

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Solution

The fourth proportional to 72,259,681.50, 108,368,264.61 and 21,129,546.06 is: 31,688,103.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259,681.50 : 108,368,264.61 = 21,129,546.06 : x
  2. Step 2: Convert to fraction form
    72,259,681.50/108,368,264.61 = 21,129,546.06/x
  3. Step 3: Cross multiply
    72,259,681.50x = 108,368,264.61 × 21,129,546.06
  4. Step 4: Simplify right side
    72,259,681.50x = 2,289,772,238,519,263
  5. Step 5: Solve for x
    x = 2,289,772,238,519,263/72,259,681.50
  6. Step 6: Final answer
    x = 31,688,103.12

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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.