Home / 31,424,973.30-43,386,387.21-21,518,433.54

Finding the Fourth Proportional to 31,424,973.30, 43,386,387.21 and 21,518,433.54

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Solution

The fourth proportional to 31,424,973.30, 43,386,387.21 and 21,518,433.54 is: 29,709,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424,973.30 : 43,386,387.21 = 21,518,433.54 : x
  2. Step 2: Convert to fraction form
    31,424,973.30/43,386,387.21 = 21,518,433.54/x
  3. Step 3: Cross multiply
    31,424,973.30x = 43,386,387.21 × 21,518,433.54
  4. Step 4: Simplify right side
    31,424,973.30x = 933,607,089,719,091
  5. Step 5: Solve for x
    x = 933,607,089,719,091/31,424,973.30
  6. Step 6: Final answer
    x = 29,709,081.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.