Home / 30,513,143.06-42,119,186.82-20,203,187.66

Finding the Fourth Proportional to 30,513,143.06, 42,119,186.82 and 20,203,187.66

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Solution

The fourth proportional to 30,513,143.06, 42,119,186.82 and 20,203,187.66 is: 27,887,714.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,513,143.06 : 42,119,186.82 = 20,203,187.66 : x
  2. Step 2: Convert to fraction form
    30,513,143.06/42,119,186.82 = 20,203,187.66/x
  3. Step 3: Cross multiply
    30,513,143.06x = 42,119,186.82 × 20,203,187.66
  4. Step 4: Simplify right side
    30,513,143.06x = 850,941,835,411,058.62
  5. Step 5: Solve for x
    x = 850,941,835,411,058.62/30,513,143.06
  6. Step 6: Final answer
    x = 27,887,714.93

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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.