Home / 82,428,436.76-123,646,017.65-21,019,188.08

Finding the Fourth Proportional to 82,428,436.76, 123,646,017.65 and 21,019,188.08

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Solution

The fourth proportional to 82,428,436.76, 123,646,017.65 and 21,019,188.08 is: 31,529,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,428,436.76 : 123,646,017.65 = 21,019,188.08 : x
  2. Step 2: Convert to fraction form
    82,428,436.76/123,646,017.65 = 21,019,188.08/x
  3. Step 3: Cross multiply
    82,428,436.76x = 123,646,017.65 × 21,019,188.08
  4. Step 4: Simplify right side
    82,428,436.76x = 2,598,938,900,532,368.50
  5. Step 5: Solve for x
    x = 2,598,938,900,532,368.50/82,428,436.76
  6. Step 6: Final answer
    x = 31,529,639.56

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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.