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Finding the Fourth Proportional to 42,903.60, 64,225.80 and 37,719.60

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Solution

The fourth proportional to 42,903.60, 64,225.80 and 37,719.60 is: 56,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,903.60 : 64,225.80 = 37,719.60 : x
  2. Step 2: Convert to fraction form
    42,903.60/64,225.80 = 37,719.60/x
  3. Step 3: Cross multiply
    42,903.60x = 64,225.80 × 37,719.60
  4. Step 4: Simplify right side
    42,903.60x = 2,422,571,485.68
  5. Step 5: Solve for x
    x = 2,422,571,485.68/42,903.60
  6. Step 6: Final answer
    x = 56,465.46

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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.