Home / 28,239,637.80-42,365,361.60-9,072,332.40

Finding the Fourth Proportional to 28,239,637.80, 42,365,361.60 and 9,072,332.40

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Solution

The fourth proportional to 28,239,637.80, 42,365,361.60 and 9,072,332.40 is: 13,610,395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239,637.80 : 42,365,361.60 = 9,072,332.40 : x
  2. Step 2: Convert to fraction form
    28,239,637.80/42,365,361.60 = 9,072,332.40/x
  3. Step 3: Cross multiply
    28,239,637.80x = 42,365,361.60 × 9,072,332.40
  4. Step 4: Simplify right side
    28,239,637.80x = 384,352,642,681,395.88
  5. Step 5: Solve for x
    x = 384,352,642,681,395.88/28,239,637.80
  6. Step 6: Final answer
    x = 13,610,395.62

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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.