Home / 85,448.79-128,172.78-47,480.18

Finding the Fourth Proportional to 85,448.79, 128,172.78 and 47,480.18

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Solution

The fourth proportional to 85,448.79, 128,172.78 and 47,480.18 is: 71,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448.79 : 128,172.78 = 47,480.18 : x
  2. Step 2: Convert to fraction form
    85,448.79/128,172.78 = 47,480.18/x
  3. Step 3: Cross multiply
    85,448.79x = 128,172.78 × 47,480.18
  4. Step 4: Simplify right side
    85,448.79x = 6,085,666,024.64
  5. Step 5: Solve for x
    x = 6,085,666,024.64/85,448.79
  6. Step 6: Final answer
    x = 71,220.04

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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.