Home / 77,281.20-106,649.40-43,289.40

Finding the Fourth Proportional to 77,281.20, 106,649.40 and 43,289.40

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Solution

The fourth proportional to 77,281.20, 106,649.40 and 43,289.40 is: 59,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,281.20 : 106,649.40 = 43,289.40 : x
  2. Step 2: Convert to fraction form
    77,281.20/106,649.40 = 43,289.40/x
  3. Step 3: Cross multiply
    77,281.20x = 106,649.40 × 43,289.40
  4. Step 4: Simplify right side
    77,281.20x = 4,616,788,536.36
  5. Step 5: Solve for x
    x = 4,616,788,536.36/77,281.20
  6. Step 6: Final answer
    x = 59,740.12

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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.