Home / 78,413,335.79-117,604,503.31-74,524,663.89

Finding the Fourth Proportional to 78,413,335.79, 117,604,503.31 and 74,524,663.89

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Solution

The fourth proportional to 78,413,335.79, 117,604,503.31 and 74,524,663.89 is: 111,772,264.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413,335.79 : 117,604,503.31 = 74,524,663.89 : x
  2. Step 2: Convert to fraction form
    78,413,335.79/117,604,503.31 = 74,524,663.89/x
  3. Step 3: Cross multiply
    78,413,335.79x = 117,604,503.31 × 74,524,663.89
  4. Step 4: Simplify right side
    78,413,335.79x = 8,764,436,081,128,143
  5. Step 5: Solve for x
    x = 8,764,436,081,128,143/78,413,335.79
  6. Step 6: Final answer
    x = 111,772,264.15

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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.