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Finding the Fourth Proportional to 58,854.20, 81,209.40 and 38,719.22

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Solution

The fourth proportional to 58,854.20, 81,209.40 and 38,719.22 is: 53,426.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,854.20 : 81,209.40 = 38,719.22 : x
  2. Step 2: Convert to fraction form
    58,854.20/81,209.40 = 38,719.22/x
  3. Step 3: Cross multiply
    58,854.20x = 81,209.40 × 38,719.22
  4. Step 4: Simplify right side
    58,854.20x = 3,144,364,624.67
  5. Step 5: Solve for x
    x = 3,144,364,624.67/58,854.20
  6. Step 6: Final answer
    x = 53,426.34

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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.