Home / 42,749.60-64,124.40-19,421.60

Finding the Fourth Proportional to 42,749.60, 64,124.40 and 19,421.60

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Solution

The fourth proportional to 42,749.60, 64,124.40 and 19,421.60 is: 29,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,749.60 : 64,124.40 = 19,421.60 : x
  2. Step 2: Convert to fraction form
    42,749.60/64,124.40 = 19,421.60/x
  3. Step 3: Cross multiply
    42,749.60x = 64,124.40 × 19,421.60
  4. Step 4: Simplify right side
    42,749.60x = 1,245,398,447.04
  5. Step 5: Solve for x
    x = 1,245,398,447.04/42,749.60
  6. Step 6: Final answer
    x = 29,132.40

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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.