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Finding the Fourth Proportional to 56,148.69, 77,392.87 and 39,801.39

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Solution

The fourth proportional to 56,148.69, 77,392.87 and 39,801.39 is: 54,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,148.69 : 77,392.87 = 39,801.39 : x
  2. Step 2: Convert to fraction form
    56,148.69/77,392.87 = 39,801.39/x
  3. Step 3: Cross multiply
    56,148.69x = 77,392.87 × 39,801.39
  4. Step 4: Simplify right side
    56,148.69x = 3,080,343,802.09
  5. Step 5: Solve for x
    x = 3,080,343,802.09/56,148.69
  6. Step 6: Final answer
    x = 54,860.47

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1.5x scale

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.