Home / 101,739.79-140,398.32-56,417.05

Finding the Fourth Proportional to 101,739.79, 140,398.32 and 56,417.05

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Solution

The fourth proportional to 101,739.79, 140,398.32 and 56,417.05 is: 77,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,739.79 : 140,398.32 = 56,417.05 : x
  2. Step 2: Convert to fraction form
    101,739.79/140,398.32 = 56,417.05/x
  3. Step 3: Cross multiply
    101,739.79x = 140,398.32 × 56,417.05
  4. Step 4: Simplify right side
    101,739.79x = 7,920,859,039.36
  5. Step 5: Solve for x
    x = 7,920,859,039.36/101,739.79
  6. Step 6: Final answer
    x = 77,854.09

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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.