Home / 30,305,688.30-45,458,532.45-21,218,047.20

Finding the Fourth Proportional to 30,305,688.30, 45,458,532.45 and 21,218,047.20

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Solution

The fourth proportional to 30,305,688.30, 45,458,532.45 and 21,218,047.20 is: 31,827,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,305,688.30 : 45,458,532.45 = 21,218,047.20 : x
  2. Step 2: Convert to fraction form
    30,305,688.30/45,458,532.45 = 21,218,047.20/x
  3. Step 3: Cross multiply
    30,305,688.30x = 45,458,532.45 × 21,218,047.20
  4. Step 4: Simplify right side
    30,305,688.30x = 964,541,287,166,831.62
  5. Step 5: Solve for x
    x = 964,541,287,166,831.62/30,305,688.30
  6. Step 6: Final answer
    x = 31,827,070.80

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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.