Home / 74,887,938.40-112,323,613.20-21,040,693.60

Finding the Fourth Proportional to 74,887,938.40, 112,323,613.20 and 21,040,693.60

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Solution

The fourth proportional to 74,887,938.40, 112,323,613.20 and 21,040,693.60 is: 31,558,709.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887,938.40 : 112,323,613.20 = 21,040,693.60 : x
  2. Step 2: Convert to fraction form
    74,887,938.40/112,323,613.20 = 21,040,693.60/x
  3. Step 3: Cross multiply
    74,887,938.40x = 112,323,613.20 × 21,040,693.60
  4. Step 4: Simplify right side
    74,887,938.40x = 2,363,366,729,386,116
  5. Step 5: Solve for x
    x = 2,363,366,729,386,116/74,887,938.40
  6. Step 6: Final answer
    x = 31,558,709.99

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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.