Home / 51,577.61-77,378.63-19,988.42

Finding the Fourth Proportional to 51,577.61, 77,378.63 and 19,988.42

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Solution

The fourth proportional to 51,577.61, 77,378.63 and 19,988.42 is: 29,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,577.61 : 77,378.63 = 19,988.42 : x
  2. Step 2: Convert to fraction form
    51,577.61/77,378.63 = 19,988.42/x
  3. Step 3: Cross multiply
    51,577.61x = 77,378.63 × 19,988.42
  4. Step 4: Simplify right side
    51,577.61x = 1,546,676,068.63
  5. Step 5: Solve for x
    x = 1,546,676,068.63/51,577.61
  6. Step 6: Final answer
    x = 29,987.36

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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.