Home / 30,513,141.12-42,119,184.15-20,203,185.72

Finding the Fourth Proportional to 30,513,141.12, 42,119,184.15 and 20,203,185.72

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Solution

The fourth proportional to 30,513,141.12, 42,119,184.15 and 20,203,185.72 is: 27,887,712.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,513,141.12 : 42,119,184.15 = 20,203,185.72 : x
  2. Step 2: Convert to fraction form
    30,513,141.12/42,119,184.15 = 20,203,185.72/x
  3. Step 3: Cross multiply
    30,513,141.12x = 42,119,184.15 × 20,203,185.72
  4. Step 4: Simplify right side
    30,513,141.12x = 850,941,699,757,330.25
  5. Step 5: Solve for x
    x = 850,941,699,757,330.25/30,513,141.12
  6. Step 6: Final answer
    x = 27,887,712.26

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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.