Home / 72,403,456.60-108,607,809.30-21,290,642.20

Finding the Fourth Proportional to 72,403,456.60, 108,607,809.30 and 21,290,642.20

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Solution

The fourth proportional to 72,403,456.60, 108,607,809.30 and 21,290,642.20 is: 31,936,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403,456.60 : 108,607,809.30 = 21,290,642.20 : x
  2. Step 2: Convert to fraction form
    72,403,456.60/108,607,809.30 = 21,290,642.20/x
  3. Step 3: Cross multiply
    72,403,456.60x = 108,607,809.30 × 21,290,642.20
  4. Step 4: Simplify right side
    72,403,456.60x = 2,312,330,007,932,132.50
  5. Step 5: Solve for x
    x = 2,312,330,007,932,132.50/72,403,456.60
  6. Step 6: Final answer
    x = 31,936,735.02

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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.