Home / 85,928.47-128,943.74-46,484.71

Finding the Fourth Proportional to 85,928.47, 128,943.74 and 46,484.71

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Solution

The fourth proportional to 85,928.47, 128,943.74 and 46,484.71 is: 69,754.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,928.47 : 128,943.74 = 46,484.71 : x
  2. Step 2: Convert to fraction form
    85,928.47/128,943.74 = 46,484.71/x
  3. Step 3: Cross multiply
    85,928.47x = 128,943.74 × 46,484.71
  4. Step 4: Simplify right side
    85,928.47x = 5,993,912,127.79
  5. Step 5: Solve for x
    x = 5,993,912,127.79/85,928.47
  6. Step 6: Final answer
    x = 69,754.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.