Home / 51,430.16-77,148.66-19,855.28

Finding the Fourth Proportional to 51,430.16, 77,148.66 and 19,855.28

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Solution

The fourth proportional to 51,430.16, 77,148.66 and 19,855.28 is: 29,784.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.16 : 77,148.66 = 19,855.28 : x
  2. Step 2: Convert to fraction form
    51,430.16/77,148.66 = 19,855.28/x
  3. Step 3: Cross multiply
    51,430.16x = 77,148.66 × 19,855.28
  4. Step 4: Simplify right side
    51,430.16x = 1,531,808,245.92
  5. Step 5: Solve for x
    x = 1,531,808,245.92/51,430.16
  6. Step 6: Final answer
    x = 29,784.24

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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.