Home / 81,336,666.40-121,966,508.40-47,268,455.20

Finding the Fourth Proportional to 81,336,666.40, 121,966,508.40 and 47,268,455.20

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Solution

The fourth proportional to 81,336,666.40, 121,966,508.40 and 47,268,455.20 is: 70,880,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,336,666.40 : 121,966,508.40 = 47,268,455.20 : x
  2. Step 2: Convert to fraction form
    81,336,666.40/121,966,508.40 = 47,268,455.20/x
  3. Step 3: Cross multiply
    81,336,666.40x = 121,966,508.40 × 47,268,455.20
  4. Step 4: Simplify right side
    81,336,666.40x = 5,765,168,438,205,824
  5. Step 5: Solve for x
    x = 5,765,168,438,205,824/81,336,666.40
  6. Step 6: Final answer
    x = 70,880,313.80

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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.