Home / 76,602,178.80-115,009,556.40-47,904,364.80

Finding the Fourth Proportional to 76,602,178.80, 115,009,556.40 and 47,904,364.80

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Solution

The fourth proportional to 76,602,178.80, 115,009,556.40 and 47,904,364.80 is: 71,923,016.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,602,178.80 : 115,009,556.40 = 47,904,364.80 : x
  2. Step 2: Convert to fraction form
    76,602,178.80/115,009,556.40 = 47,904,364.80/x
  3. Step 3: Cross multiply
    76,602,178.80x = 115,009,556.40 × 47,904,364.80
  4. Step 4: Simplify right side
    76,602,178.80x = 5,509,459,745,271,775
  5. Step 5: Solve for x
    x = 5,509,459,745,271,775/76,602,178.80
  6. Step 6: Final answer
    x = 71,923,016.18

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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.