Home / 75,420.47-113,178.35-42,162.36

Finding the Fourth Proportional to 75,420.47, 113,178.35 and 42,162.36

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Solution

The fourth proportional to 75,420.47, 113,178.35 and 42,162.36 is: 63,270.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,420.47 : 113,178.35 = 42,162.36 : x
  2. Step 2: Convert to fraction form
    75,420.47/113,178.35 = 42,162.36/x
  3. Step 3: Cross multiply
    75,420.47x = 113,178.35 × 42,162.36
  4. Step 4: Simplify right side
    75,420.47x = 4,771,866,017.89
  5. Step 5: Solve for x
    x = 4,771,866,017.89/75,420.47
  6. Step 6: Final answer
    x = 63,270.17

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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.