Home / 71,509.47-98,685.30-39,681.33

Finding the Fourth Proportional to 71,509.47, 98,685.30 and 39,681.33

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Solution

The fourth proportional to 71,509.47, 98,685.30 and 39,681.33 is: 54,761.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,509.47 : 98,685.30 = 39,681.33 : x
  2. Step 2: Convert to fraction form
    71,509.47/98,685.30 = 39,681.33/x
  3. Step 3: Cross multiply
    71,509.47x = 98,685.30 × 39,681.33
  4. Step 4: Simplify right side
    71,509.47x = 3,915,963,734.18
  5. Step 5: Solve for x
    x = 3,915,963,734.18/71,509.47
  6. Step 6: Final answer
    x = 54,761.47

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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.