Home / 74,879,921.80-112,319,882.70-42,519,320.20

Finding the Fourth Proportional to 74,879,921.80, 112,319,882.70 and 42,519,320.20

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Solution

The fourth proportional to 74,879,921.80, 112,319,882.70 and 42,519,320.20 is: 63,778,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,879,921.80 : 112,319,882.70 = 42,519,320.20 : x
  2. Step 2: Convert to fraction form
    74,879,921.80/112,319,882.70 = 42,519,320.20/x
  3. Step 3: Cross multiply
    74,879,921.80x = 112,319,882.70 × 42,519,320.20
  4. Step 4: Simplify right side
    74,879,921.80x = 4,775,765,057,347,741
  5. Step 5: Solve for x
    x = 4,775,765,057,347,741/74,879,921.80
  6. Step 6: Final answer
    x = 63,778,980.30

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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.