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Finding the Fourth Proportional to 64,990.40, 97,485.60 and 25,548.80

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Solution

The fourth proportional to 64,990.40, 97,485.60 and 25,548.80 is: 38,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.40 : 97,485.60 = 25,548.80 : x
  2. Step 2: Convert to fraction form
    64,990.40/97,485.60 = 25,548.80/x
  3. Step 3: Cross multiply
    64,990.40x = 97,485.60 × 25,548.80
  4. Step 4: Simplify right side
    64,990.40x = 2,490,640,097.28
  5. Step 5: Solve for x
    x = 2,490,640,097.28/64,990.40
  6. Step 6: Final answer
    x = 38,323.20

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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.