Home / 71,509.20-98,683.47-39,678.63

Finding the Fourth Proportional to 71,509.20, 98,683.47 and 39,678.63

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Solution

The fourth proportional to 71,509.20, 98,683.47 and 39,678.63 is: 54,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,509.20 : 98,683.47 = 39,678.63 : x
  2. Step 2: Convert to fraction form
    71,509.20/98,683.47 = 39,678.63/x
  3. Step 3: Cross multiply
    71,509.20x = 98,683.47 × 39,678.63
  4. Step 4: Simplify right side
    71,509.20x = 3,915,624,893.25
  5. Step 5: Solve for x
    x = 3,915,624,893.25/71,509.20
  6. Step 6: Final answer
    x = 54,756.94

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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.