Home / 42,789,805.20-64,184,707.80-15,857,888.40

Finding the Fourth Proportional to 42,789,805.20, 64,184,707.80 and 15,857,888.40

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Solution

The fourth proportional to 42,789,805.20, 64,184,707.80 and 15,857,888.40 is: 23,786,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,789,805.20 : 64,184,707.80 = 15,857,888.40 : x
  2. Step 2: Convert to fraction form
    42,789,805.20/64,184,707.80 = 15,857,888.40/x
  3. Step 3: Cross multiply
    42,789,805.20x = 64,184,707.80 × 15,857,888.40
  4. Step 4: Simplify right side
    42,789,805.20x = 1,017,833,933,279,009.50
  5. Step 5: Solve for x
    x = 1,017,833,933,279,009.50/42,789,805.20
  6. Step 6: Final answer
    x = 23,786,832.60

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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.