Home / 51,421.30-77,128.71-16,386.10

Finding the Fourth Proportional to 51,421.30, 77,128.71 and 16,386.10

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Solution

The fourth proportional to 51,421.30, 77,128.71 and 16,386.10 is: 24,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,421.30 : 77,128.71 = 16,386.10 : x
  2. Step 2: Convert to fraction form
    51,421.30/77,128.71 = 16,386.10/x
  3. Step 3: Cross multiply
    51,421.30x = 77,128.71 × 16,386.10
  4. Step 4: Simplify right side
    51,421.30x = 1,263,838,754.93
  5. Step 5: Solve for x
    x = 1,263,838,754.93/51,421.30
  6. Step 6: Final answer
    x = 24,578.12

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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.