Home / 81,219,278.80-121,828,918.20-57,032,808.40

Finding the Fourth Proportional to 81,219,278.80, 121,828,918.20 and 57,032,808.40

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Solution

The fourth proportional to 81,219,278.80, 121,828,918.20 and 57,032,808.40 is: 85,549,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,219,278.80 : 121,828,918.20 = 57,032,808.40 : x
  2. Step 2: Convert to fraction form
    81,219,278.80/121,828,918.20 = 57,032,808.40/x
  3. Step 3: Cross multiply
    81,219,278.80x = 121,828,918.20 × 57,032,808.40
  4. Step 4: Simplify right side
    81,219,278.80x = 6,948,245,349,279,873
  5. Step 5: Solve for x
    x = 6,948,245,349,279,873/81,219,278.80
  6. Step 6: Final answer
    x = 85,549,212.60

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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.