Home / 78,116,549.49-117,179,696.12-20,608,875.81

Finding the Fourth Proportional to 78,116,549.49, 117,179,696.12 and 20,608,875.81

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Solution

The fourth proportional to 78,116,549.49, 117,179,696.12 and 20,608,875.81 is: 30,914,599.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116,549.49 : 117,179,696.12 = 20,608,875.81 : x
  2. Step 2: Convert to fraction form
    78,116,549.49/117,179,696.12 = 20,608,875.81/x
  3. Step 3: Cross multiply
    78,116,549.49x = 117,179,696.12 × 20,608,875.81
  4. Step 4: Simplify right side
    78,116,549.49x = 2,414,941,804,687,574
  5. Step 5: Solve for x
    x = 2,414,941,804,687,574/78,116,549.49
  6. Step 6: Final answer
    x = 30,914,599.02

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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.