Home / 51,381.48-70,905.54-28,719.08

Finding the Fourth Proportional to 51,381.48, 70,905.54 and 28,719.08

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Solution

The fourth proportional to 51,381.48, 70,905.54 and 28,719.08 is: 39,631.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,381.48 : 70,905.54 = 28,719.08 : x
  2. Step 2: Convert to fraction form
    51,381.48/70,905.54 = 28,719.08/x
  3. Step 3: Cross multiply
    51,381.48x = 70,905.54 × 28,719.08
  4. Step 4: Simplify right side
    51,381.48x = 2,036,341,875.70
  5. Step 5: Solve for x
    x = 2,036,341,875.70/51,381.48
  6. Step 6: Final answer
    x = 39,631.83

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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.