Home / 78,732,711.05-118,099,066.58-72,036,554.45

Finding the Fourth Proportional to 78,732,711.05, 118,099,066.58 and 72,036,554.45

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Solution

The fourth proportional to 78,732,711.05, 118,099,066.58 and 72,036,554.45 is: 108,054,831.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,711.05 : 118,099,066.58 = 72,036,554.45 : x
  2. Step 2: Convert to fraction form
    78,732,711.05/118,099,066.58 = 72,036,554.45/x
  3. Step 3: Cross multiply
    78,732,711.05x = 118,099,066.58 × 72,036,554.45
  4. Step 4: Simplify right side
    78,732,711.05x = 8,507,449,839,824,163
  5. Step 5: Solve for x
    x = 8,507,449,839,824,163/78,732,711.05
  6. Step 6: Final answer
    x = 108,054,831.68

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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.