Home / 105,575.84-145,696.92-57,831.20

Finding the Fourth Proportional to 105,575.84, 145,696.92 and 57,831.20

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Solution

The fourth proportional to 105,575.84, 145,696.92 and 57,831.20 is: 79,808.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,575.84 : 145,696.92 = 57,831.20 : x
  2. Step 2: Convert to fraction form
    105,575.84/145,696.92 = 57,831.20/x
  3. Step 3: Cross multiply
    105,575.84x = 145,696.92 × 57,831.20
  4. Step 4: Simplify right side
    105,575.84x = 8,425,827,719.90
  5. Step 5: Solve for x
    x = 8,425,827,719.90/105,575.84
  6. Step 6: Final answer
    x = 79,808.29

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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.