Home / 77,513.40-106,967.34-43,978.68

Finding the Fourth Proportional to 77,513.40, 106,967.34 and 43,978.68

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Solution

The fourth proportional to 77,513.40, 106,967.34 and 43,978.68 is: 60,689.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,513.40 : 106,967.34 = 43,978.68 : x
  2. Step 2: Convert to fraction form
    77,513.40/106,967.34 = 43,978.68/x
  3. Step 3: Cross multiply
    77,513.40x = 106,967.34 × 43,978.68
  4. Step 4: Simplify right side
    77,513.40x = 4,704,282,416.31
  5. Step 5: Solve for x
    x = 4,704,282,416.31/77,513.40
  6. Step 6: Final answer
    x = 60,689.92

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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.