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Finding the Fourth Proportional to 35,477.60, 53,139.60 and 30,869.60

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Solution

The fourth proportional to 35,477.60, 53,139.60 and 30,869.60 is: 46,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,477.60 : 53,139.60 = 30,869.60 : x
  2. Step 2: Convert to fraction form
    35,477.60/53,139.60 = 30,869.60/x
  3. Step 3: Cross multiply
    35,477.60x = 53,139.60 × 30,869.60
  4. Step 4: Simplify right side
    35,477.60x = 1,640,398,196.16
  5. Step 5: Solve for x
    x = 1,640,398,196.16/35,477.60
  6. Step 6: Final answer
    x = 46,237.58

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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.