Home / 78,428,514.08-108,223,767.24-45,382,171.32

Finding the Fourth Proportional to 78,428,514.08, 108,223,767.24 and 45,382,171.32

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Solution

The fourth proportional to 78,428,514.08, 108,223,767.24 and 45,382,171.32 is: 62,623,009.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428,514.08 : 108,223,767.24 = 45,382,171.32 : x
  2. Step 2: Convert to fraction form
    78,428,514.08/108,223,767.24 = 45,382,171.32/x
  3. Step 3: Cross multiply
    78,428,514.08x = 108,223,767.24 × 45,382,171.32
  4. Step 4: Simplify right side
    78,428,514.08x = 4,911,429,545,781,483
  5. Step 5: Solve for x
    x = 4,911,429,545,781,483/78,428,514.08
  6. Step 6: Final answer
    x = 62,623,009.03

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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.