Home / 77,239.15-106,581.21-43,242.91

Finding the Fourth Proportional to 77,239.15, 106,581.21 and 43,242.91

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Solution

The fourth proportional to 77,239.15, 106,581.21 and 43,242.91 is: 59,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,239.15 : 106,581.21 = 43,242.91 : x
  2. Step 2: Convert to fraction form
    77,239.15/106,581.21 = 43,242.91/x
  3. Step 3: Cross multiply
    77,239.15x = 106,581.21 × 43,242.91
  4. Step 4: Simplify right side
    77,239.15x = 4,608,881,138.82
  5. Step 5: Solve for x
    x = 4,608,881,138.82/77,239.15
  6. Step 6: Final answer
    x = 59,670.28

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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.