Home / 81,095,678.88-121,643,567.52-19,684,926.72

Finding the Fourth Proportional to 81,095,678.88, 121,643,567.52 and 19,684,926.72

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Solution

The fourth proportional to 81,095,678.88, 121,643,567.52 and 19,684,926.72 is: 29,527,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,095,678.88 : 121,643,567.52 = 19,684,926.72 : x
  2. Step 2: Convert to fraction form
    81,095,678.88/121,643,567.52 = 19,684,926.72/x
  3. Step 3: Cross multiply
    81,095,678.88x = 121,643,567.52 × 19,684,926.72
  4. Step 4: Simplify right side
    81,095,678.88x = 2,394,544,712,590,572
  5. Step 5: Solve for x
    x = 2,394,544,712,590,572/81,095,678.88
  6. Step 6: Final answer
    x = 29,527,402.02

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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.