Home / 78,428,506.14-108,223,756.29-45,382,163.40

Finding the Fourth Proportional to 78,428,506.14, 108,223,756.29 and 45,382,163.40

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Solution

The fourth proportional to 78,428,506.14, 108,223,756.29 and 45,382,163.40 is: 62,622,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428,506.14 : 108,223,756.29 = 45,382,163.40 : x
  2. Step 2: Convert to fraction form
    78,428,506.14/108,223,756.29 = 45,382,163.40/x
  3. Step 3: Cross multiply
    78,428,506.14x = 108,223,756.29 × 45,382,163.40
  4. Step 4: Simplify right side
    78,428,506.14x = 4,911,428,191,714,558
  5. Step 5: Solve for x
    x = 4,911,428,191,714,558/78,428,506.14
  6. Step 6: Final answer
    x = 62,622,998.11

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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.