Home / 51,686.61-71,338.64-31,539.18

Finding the Fourth Proportional to 51,686.61, 71,338.64 and 31,539.18

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Solution

The fourth proportional to 51,686.61, 71,338.64 and 31,539.18 is: 43,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,686.61 : 71,338.64 = 31,539.18 : x
  2. Step 2: Convert to fraction form
    51,686.61/71,338.64 = 31,539.18/x
  3. Step 3: Cross multiply
    51,686.61x = 71,338.64 × 31,539.18
  4. Step 4: Simplify right side
    51,686.61x = 2,249,962,465.11
  5. Step 5: Solve for x
    x = 2,249,962,465.11/51,686.61
  6. Step 6: Final answer
    x = 43,530.86

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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.