Home / 51,316.47-70,856.78-39,360.87

Finding the Fourth Proportional to 51,316.47, 70,856.78 and 39,360.87

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Solution

The fourth proportional to 51,316.47, 70,856.78 and 39,360.87 is: 54,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,316.47 : 70,856.78 = 39,360.87 : x
  2. Step 2: Convert to fraction form
    51,316.47/70,856.78 = 39,360.87/x
  3. Step 3: Cross multiply
    51,316.47x = 70,856.78 × 39,360.87
  4. Step 4: Simplify right side
    51,316.47x = 2,788,984,309.39
  5. Step 5: Solve for x
    x = 2,788,984,309.39/51,316.47
  6. Step 6: Final answer
    x = 54,348.72

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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.