Home / 40,165,110.72-55,428,220.08-21,830,443.20

Finding the Fourth Proportional to 40,165,110.72, 55,428,220.08 and 21,830,443.20

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Solution

The fourth proportional to 40,165,110.72, 55,428,220.08 and 21,830,443.20 is: 30,126,211.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,165,110.72 : 55,428,220.08 = 21,830,443.20 : x
  2. Step 2: Convert to fraction form
    40,165,110.72/55,428,220.08 = 21,830,443.20/x
  3. Step 3: Cross multiply
    40,165,110.72x = 55,428,220.08 × 21,830,443.20
  4. Step 4: Simplify right side
    40,165,110.72x = 1,210,022,610,133,539.50
  5. Step 5: Solve for x
    x = 1,210,022,610,133,539.50/40,165,110.72
  6. Step 6: Final answer
    x = 30,126,211.24

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1.5x scale

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.