Home / 30,128,010.80-45,192,016.20-17,387,812.40

Finding the Fourth Proportional to 30,128,010.80, 45,192,016.20 and 17,387,812.40

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Solution

The fourth proportional to 30,128,010.80, 45,192,016.20 and 17,387,812.40 is: 26,081,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128,010.80 : 45,192,016.20 = 17,387,812.40 : x
  2. Step 2: Convert to fraction form
    30,128,010.80/45,192,016.20 = 17,387,812.40/x
  3. Step 3: Cross multiply
    30,128,010.80x = 45,192,016.20 × 17,387,812.40
  4. Step 4: Simplify right side
    30,128,010.80x = 785,790,299,663,360.88
  5. Step 5: Solve for x
    x = 785,790,299,663,360.88/30,128,010.80
  6. Step 6: Final answer
    x = 26,081,718.60

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1.5x scale

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.