Home / 101,719.77-140,373.32-56,398.29

Finding the Fourth Proportional to 101,719.77, 140,373.32 and 56,398.29

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Solution

The fourth proportional to 101,719.77, 140,373.32 and 56,398.29 is: 77,829.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,719.77 : 140,373.32 = 56,398.29 : x
  2. Step 2: Convert to fraction form
    101,719.77/140,373.32 = 56,398.29/x
  3. Step 3: Cross multiply
    101,719.77x = 140,373.32 × 56,398.29
  4. Step 4: Simplify right side
    101,719.77x = 7,916,814,927.63
  5. Step 5: Solve for x
    x = 7,916,814,927.63/101,719.77
  6. Step 6: Final answer
    x = 77,829.66

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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.