Home / 75,141.89-103,695.07-40,686.46

Finding the Fourth Proportional to 75,141.89, 103,695.07 and 40,686.46

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Solution

The fourth proportional to 75,141.89, 103,695.07 and 40,686.46 is: 56,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,141.89 : 103,695.07 = 40,686.46 : x
  2. Step 2: Convert to fraction form
    75,141.89/103,695.07 = 40,686.46/x
  3. Step 3: Cross multiply
    75,141.89x = 103,695.07 × 40,686.46
  4. Step 4: Simplify right side
    75,141.89x = 4,218,985,317.75
  5. Step 5: Solve for x
    x = 4,218,985,317.75/75,141.89
  6. Step 6: Final answer
    x = 56,146.92

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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.