Home / 52,178.40-78,127.36-42,930.02

Finding the Fourth Proportional to 52,178.40, 78,127.36 and 42,930.02

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Solution

The fourth proportional to 52,178.40, 78,127.36 and 42,930.02 is: 64,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,178.40 : 78,127.36 = 42,930.02 : x
  2. Step 2: Convert to fraction form
    52,178.40/78,127.36 = 42,930.02/x
  3. Step 3: Cross multiply
    52,178.40x = 78,127.36 × 42,930.02
  4. Step 4: Simplify right side
    52,178.40x = 3,354,009,215.34
  5. Step 5: Solve for x
    x = 3,354,009,215.34/52,178.40
  6. Step 6: Final answer
    x = 64,279.65

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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.