Home / 78,428,508.02-108,223,758.87-45,382,165.28

Finding the Fourth Proportional to 78,428,508.02, 108,223,758.87 and 45,382,165.28

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Solution

The fourth proportional to 78,428,508.02, 108,223,758.87 and 45,382,165.28 is: 62,623,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428,508.02 : 108,223,758.87 = 45,382,165.28 : x
  2. Step 2: Convert to fraction form
    78,428,508.02/108,223,758.87 = 45,382,165.28/x
  3. Step 3: Cross multiply
    78,428,508.02x = 108,223,758.87 × 45,382,165.28
  4. Step 4: Simplify right side
    78,428,508.02x = 4,911,428,511,720,087
  5. Step 5: Solve for x
    x = 4,911,428,511,720,087/78,428,508.02
  6. Step 6: Final answer
    x = 62,623,000.69

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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.